Proto® Industrial Tools RATCHETING BOX END WRENCH BW-0516R

DOUBLE END, REVERSIBLE TYPE FULL POLISH FINISH 5 INCH OVERALL LENGTH 5/16 SMALLER END SIZE - FRACTIONAL 3/8 LARGER END SIZE - FRACTIONAL 5/16 INCH SMALLER END SIZE 3/8 INCH LARGER END SIZE 1/4 INCH X 9/32 INCH HEAD THICKNESS BLACKHAWK[T], PROTO[R] BRAND APPLICABLE STANDARD ASME B107.100 HEAD DIMENSION 39/64 INCH W (SMALLER END) X 25/32 INCH W (LARGER END) WEIGHT 0.12 LB