Proto 3/8 in. Drive 21mm 6-Point Impact Socket (J7221M)

J7221M — Proto 3/8 in. Drive 21mm 6-Point Impact Socket, size 21mm (0.827 in.). Nut end outside diameter 1-5/32 in. (29.4 mm); Drive end outside diameter 1-5/32 in. (29.4 mm); Nut depth 17/32 in. (13.49 mm); Bolt clearance depth 19/32 in. (15.08 mm); Overall length 1-3/32 in. (27.8 mm); Product weight 0.19 lb (86 g).

Compare sizes: Proto 3/8 in. Drive 6-Point Impact Socket

21mm on 3/8 in. drive: other styles

• 3/8 in. Drive 21mm 12-Point Deep Socket (J5021M)
• 3/8 in. Drive 21mm 12-Point Socket (J5221M)
• 3/8 in. Drive 21mm 12-Point Tethered Socket (J5221M-TT)
• 3/8 in. Drive 21mm 6-Point Deep Impact Socket (J7021M)
• 3/8 in. Drive 21mm 6-Point Deep Socket (J5021MH)
• 3/8 in. Drive 21mm 6-Point Socket (J5221MH)
• 3/8 in. Drive 21mm Full Polish Open End Crowfoot Wrench (J4921MCF)
• Tethered 3/8 in. Drive 21mm 12-Point Deep Socket (J5021M-TT)

From Proto:

Features

• Proto® 6 Point Impact Sockets are ideal for use on stubborn or damaged fasteners, and also on fasteners made from soft materials
• The TorquePlus™ design is a high performance drive configuration which allows for quick and easy socket engagement to the fastener flats, not the corners
• The TorquePlus™ configuration employs a radius-corner design, shifting contact area and stress away from the fastener corners and distributing contact stresses over a large area of the socket, minimizing slippage

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