Top 10 21mm Deep Socket 1/2 Drive – Star Drive Sockets

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1. Craftsman


21mm CMMT16081, Metric, 1/2-Inch Drive, CRAFTSMAN Deep Impact Socket

Craftsman #ad - Quick size identification: Impact sockets 1/2 drive comes with large markings. Increased torque: 6-point impact socket comes with fastener. Full lifetime warranty, refer to "Warranty & Support" section below for full details. Corrosion resistant: Metric Socket have a black oxide finish. Meets or exceeds ASME Specifications.
BrandCraftsman #ad
ManufacturerCRAFTSMAN #ad
Part NumberCMMT16081



TEKTON 1/2 Inch Drive x 21 mm Deep 6-Point Socket | SHD23121

TEKTON #ad - Extra-large die-stamped size markings are easy to read and can’t wear off. Deep-length sockets reach into wells and accommodate the excess threads of longer shafts.

6-point socket opening provides an ideal, exact fit for hex-shaped fastener heads. Polished, chrome-plated finish easily wipes clean and is highly resistant to corrosion. Overall socket length: 3. 02 in. Socket end diameter: 1. 1 in. Drive end Diameter: 1. 1 in. Socket well Depth: 1. 34 in. Four detent grooves provide a secure connection with the drive tool. Socket geometry is designed to apply force to flat sides of fasteners and not the corners, preventing round-off. Beveled inner rim of the socket opening helps guide it smoothly onto fasteners.
BrandTEKTON #ad
ManufacturerTEKTON #ad
Height1.1 Inches
Length3.1 Inches
Weight0.39 Pounds
Width1.1 Inches
Part NumberSHD23121
WarrantyNo time limits, no receipts:

3. Crescent


Crescent 1/2" Drive 6 Point Deep Metric Socket 21mm, CDDS80N

Crescent #ad - Nickel chrome plated for long lasting protection. Made of chrome vanadium steel alloy specially formulated and heat-treated for strength and corrosion-resistance. Tools meet stringent new ANSI and ASME specifications and come with a full Satisfaction guarantee. Mirror polish finish that’s easy to Wipe clean. Sockets feature off corner loading technology to virtually eliminate fastener rounding.
BrandCrescent #ad
ManufacturerCrescent Tools #ad
Height5.65 Inches
Length1.6 Inches
Weight0.44 Pounds
Width1.15 Inches
Part NumberCDDS80N

4. Craftsman


12-Point CMMT44447, 21mm, Metric, CRAFTSMAN Deep Socket, 1/2-Inch Drive

Craftsman #ad - Meets or exceeds ASME Specifications. Full lifetime warranty, refer to "Warranty & Support" section below for full details. Quick engagement: 12-point box end metric socket comes with fastener. Corrosion resistance: Deep socket comes with full polish chrome finish. Quick size identification: Deep socket comes with large markings.
BrandCraftsman #ad
ManufacturerCRAFTSMAN #ad
Part NumberCMMT44447

5. Sunex Tools


Sunex 221md 1/2-Inch Drive 21-mm Deep Impact Socket

Sunex Tools #ad - Radius corner design-to extend the life of fasteners. 1/2-inch drive, 21mm deep impact socket. Provides increased strength, but also avoids rounding of rusted or damaged fasteners. Forged from the finest chrome molybdenum alloy steel-the best choice for strength and durability. The design drives the side of the fastener instead of the corner.
BrandSunex Tools #ad
ManufacturerSunex International #ad
Height3 Inches
Length1 Inches
Weight0.25 Pounds
Width1 Inches
Part Number221MD

6. Titan Tools


Titan 21093 1/2-Inch Drive x 21mm Non-marring Impact Deep Lug Nut Socket

Titan Tools #ad - Attractive Red finish for easy identification. Limited lifetime. Non-marring core and sleeve protects custom wheels and lug nuts from scratches and abrasion. 1/2" drive socket. Non-marring deep 21mm lug nut socket.
BrandTitan Tools #ad
ManufacturerTitan Tools #ad
Height5.2 Inches
Length1.4 Inches
Weight0.5 Pounds
Width1.4 Inches
Part Number21093

7. ABN


Deep Impact Metric Sockets 1-Pack, 6 Point CR-MO Metric Deep Socket Impact Sockets 1pk, ABN 1/2 Inch Drive 21mm Socket

ABN #ad - Remove tires: the abn 1/2” drive 21mm deep sockets 1-Pack is a metric impact socket that is designed for the installation and removal of lug nuts with superior grip. 21mm size: our metric impact wrench sockets have stamped size markings for easy identification; External depth is approximately 3-1/8 inches deep.

Reduce wear: the 6-point radiused rounded corners reduce wear by striking on the flat surface of the fastener to increase torque and reduce wear. Use your tools: use with your existing 1/2 inch drive impact extension bar, impact wrench, air impact tool, and other hand or electric tool; Chamfered lead-ins allow easy attachment to drive tools and placement onto fasteners; Pin hole at socket base for use with pin and O-ring for a secure attachment to drive tools.

Built to last: metric impact deep socket constructed from chrome-molybdenum steel CR-MO for maximum strength, longevity, and torque that is better than chrome-vanadium sockets; Comes pre-oiled for corrosion resistance.
BrandABN #ad
ManufacturerABN #ad
Height3.2 Inches
Length1.25 Inches
Width1.25 Inches
Part Number3969
WarrantyThis product has a manufacturer warranty against defects in materials and workmanship for a period of ONE (1) YEAR from the date of original retail purchase. See our Seller Return Policy for more details.



TEKTON 1/2 Inch Drive x 21 mm Deep 6-Point Impact Socket | SID23121

TEKTON #ad - Socket end diameter: 1. 19 inches. Drive end diameter: 1. 19 inches. Socket well depth: 1. 41 inches. 6-point socket opening provides an exact fit for hex fasteners. Radiused corners prevent fastener round-off by applying force to a fastener's flat sides, rather than its corners. Meets a minimum of 1. 3 times the ansi/ASME standard for proof torque. Overall socket Length: 3. 08 inches. Size is marked both with a high-visibility laser marking and a permanent stamped marking that won't wear off.
BrandTEKTON #ad
ManufacturerTEKTON #ad
Height1.2 Inches
Length3.1 Inches
Width1.2 Inches
Part NumberSID23121
WarrantyNo time limits, no receipts:

9. Jetech


Jetech 1/2-Inch Drive 21mm Deep Impact Socket with 6-Point Design, Metric, Heat-Treated Chrome Molybdenum Alloy Steel

Jetech #ad - Extra depth - provide more space to accommodate longer bolts and wider applications to facilitate your work. It’s much stronger to stand greater impact force than chrome vanadium ones.

Black phosphating - A fine and dense coating brings more corrosion and wear resistance for longtime use. Cr-mo alloy steel - cr-mo impact socket features with added strength, higher working temperatures and corrosion resistance. Radius corner design - the lifespan of both the fastener and socket will be greatly prolonged with the force distributed to the inwall. Cold forging & heat treatment - Cold forging and heat treatment greatly improve the performance of the socket with enhanced hardness, increased wear-resistance and lifespan.
BrandJetech #ad
ManufacturerJetech #ad
Height3.03 Inches
Length1.14 Inches
Width1.14 Inches
Part NumberFK1ov2-D21

10. Titan Tools


Titan 62421 21mm 1/2" Drive 6 Pt. Deep Socket

Titan Tools #ad - Sizes stamped for easy identification. Durable, precise fitting 21 mm, 1/2-inch drive deep socket. Deep and standard sockets and socket sets available in metric and SAE sizes from Titan. Knurled ring around socket base allows for a secure grip in greasy or oily conditions. Strong, chrome vanadium CR-V construction and mirror polish finish.
BrandTitan Tools #ad
ManufacturerTitan Tools #ad
Height2.6 Inches
Length0.9 Inches
Width0.4 Inches
Part Number62421