Anti-Slip Design (ASD) wrench has a locking groove prevents slippage and knuckle injury Box ends offset 7 1/2° minimum Increased torque applied to fastener with fewer rounded edges Unique arc design increases surface contact.Includes:(1) 3/8 x 7/16 in(1) 1/2 x 9/16 in(1) 9/16 x 5/8 in(1) 11/16 x 3/4 in(1) 13/16 x 7/8 in(1) 15/16 x 1 in(1) 1-1/16 x 1-1/8 inTool Roll