Top 10 21mm Deep Impact Socket 1/2 Drive – Triple Square Drive Sockets

As an Amazon Associate I earn from qualifying purchases.

1. Craftsman


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

Craftsman #ad - Increased torque: 6-point impact socket comes with fastener. Corrosion resistant: Metric Socket have a black oxide finish. Meets or exceeds ASME Specifications. Quick size identification: Impact sockets 1/2 drive comes with large markings.
BrandCraftsman #ad
ManufacturerCRAFTSMAN #ad
Part NumberCMMT16081

2. Performance Tool


Red, Performance Tool W32925 Performance Tool 1/2-Inch Impact Drive 21mm Thin Wall Socket

Performance Tool #ad - Heavy duty chrome molybdenum. 31. 2mm. Impact Socket. Color coded for easy identification. Outside diameter including sleeve: 1. 228 in. Protective sleeves and plastic inserts prevent scratching of wheels and lug nuts.
BrandPerformance Tool #ad
ManufacturerWIOGW #ad
Height1.1 Inches
Length5.8 Inches
Weight0.55 Pounds
Width1.6 Inches
Part NumberW32925

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



84579N, GEARWRENCH 1/2" Drive 6 Pt. Deep Impact Socket, 21mm

GEARWRENCH #ad - Manufactured in China. Chrome molybdenum alloy steel CR-MO for exceptional strength and durability. Color: Black.
ManufacturerApex Tool Group #ad
Height6 Inches
Length2.05 Inches
Weight0.65 Pounds
Width1.5 Inches
Part Number84579N
WarrantyStandard Limited Lifetime



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

TEKTON #ad - 6-point socket opening provides an ideal, exact fit for hex-shaped fastener heads. Beveled inner rim of the socket opening helps guide it smoothly onto fasteners.

Extra-large die-stamped size markings are easy to read and can’t wear off. Polished, chrome-plated finish easily wipes clean and is highly resistant to corrosion. Deep-length sockets reach into wells and accommodate the excess threads of longer shafts. Overall socket length: 3. 02 in. Drive end diameter: 1. 1 in. Socket end Diameter: 1. 1 in. Socket well Depth: 1. 34 in. Socket geometry is designed to apply force to flat sides of fasteners and not the corners, preventing round-off. Four detent grooves provide a secure connection with the drive tool.
BrandTEKTON #ad
ManufacturerTEKTON #ad
Height1.1 Inches
Length3.1 Inches
Weight0.39 Pounds
Width1.1 Inches
Part NumberSHD23121
WarrantyNo time limits, no receipts:

6. Sunex Tools


Sunex 267221 1/2-Inch Drive 21-mm 12-Point Deep Impact Socket

Sunex Tools #ad - Cr-mo alloy steel for long life. 21mm 12-point deep impact socket. 1/2-inch drive. 12 point sockets offer double the starting points as 6 point sockets.
BrandSunex Tools #ad
ManufacturerSunex International #ad
Height2 Inches
Length6 Inches
Weight0.55 Pounds
Width2 Inches
Part Number267221



Metric, CR-MO, 6 Point, RIGOR 11505 21mm Non-Marring Lug Nut Socket | Wheel Protector Impact Socket | 1/2" Drive, Deep

RIGOR #ad - Durability: constructed from high quality Chromium-molybdenum Cr-Mo steel with precision forging and heat treatment which makes the socket durable and long-lasting.

Long-life time: over 2500+ life cycles before failure based on a 390 ft/lb Torque Test; Meet or exceed ANSI standard. Strong sleeve: pp+tpr sleeve is oil resistant, weathering resistant -40 to 176 ˚F, and more flexible than regular PT material to improve the broken issue. Easily identify: Color coded and Laser etched for easy identification. Multiple designs: hollow core design for using on long lug nut; Non-Marring Sleeve and Core protect the rim and lug nut.
BrandRIGOR #ad
ManufacturerRIGOR TOOLS #ad
Height1.18 Inches
Length3.35 Inches
Weight9.64 ounces
Width1.18 Inches
Part Number11505
WarrantyLimited Life Time Warranty

8. Sunex Tools


Sunex 2621 1/2-Inch Drive 21-Mm Extra Thin Wall Deep Impact Socket

Sunex Tools #ad - Cr-mo alloy steel for long life. Extra Thin Wall. 1/2-inch drive by 21mm. Durability radius corner design.
BrandSunex Tools #ad
ManufacturerSunex International #ad
Height2.9 Inches
Length1 Inches
Weight0.4 Pounds
Width0.9 Inches
Part Number2621



CASOMAN 1/2-Inch Drive Deep Impact Socket- 21mm,6-Point, Metric, CR-V

CASOMAN #ad - Meets or exceeds ansi performance standards. Made from drop forged and heat treated chrome vanadium steel 50BV30 with a corrosion-resistant black phosphate finish, providing the durability for a hard use. Extra-deep broach accommodates longer fasteners. It comes with 1 year quality warranty. 6-point flank drive design grips fastener more tightly on the flat sides and prevents rounding off at corners. Permanent high visibility laser etched size marking on each socket for quick size selection when working.
BrandCASOMAN #ad
ManufacturerCASOMAN #ad
Height1.06 Inches
Length3.07 Inches
Weight188 Grams
Width1.06 Inches
Part NumberCS265
WarrantyIt comes with 1 year quality warranty.

10. Craftsman


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

Craftsman #ad - Quick engagement: 12-point box end metric socket comes with fastener. Quick size identification: Deep socket comes with large markings. Meets or exceeds ASME Specifications. Corrosion resistance: Deep socket comes with full polish chrome finish.
BrandCraftsman #ad
ManufacturerCRAFTSMAN #ad
Part NumberCMMT44447