Koken 3410M-21 3/8 Sq. Dr. Socket 21mm Surface Length 32mm

METRIC, 3/8” DRIVE, SURFACE DRIVE, STANDARD LENGTH, CHROME HAND SOCKET.

Surface drive sockets are designed to retain contact with flat sides of nut to transmit high torque and reduce nut wear.
Compared to FLAT DRIVE, SURFACE DRIVE utilizes contact on the larger area closer to the center of the bolt or nut.
SURFACE DRIVE is useful for painted face nuts or any bolt or nut made of soft material, with less risk of damaging the faces. SURFACE DRIVE can also be useful for a bolt or nut that has been damaged or deformed.

Input Drive Size	3/8"	Drive Shape	Square
Length	32mm	Type	Surface Drive Socket
Output Size	21mm	Opening	Surface
D1 Size	28mm	D2 Size	26mm
H Size	14.5mm	L Size	32mm