This attachment transforms your cordless screwdriver or drill into a blind rivet tool. You can easily rivet, even multiple rivet operations in succession are no problem. With a 6.3 mm (1/4") hex shank, it can only be used with drills or cordless screwdrivers that have a forward/reverse function and a minimum torque of 11 Nm. Suitable for processing aluminum (2.4/3.2/4.0/4.8 mm) and steel rivets (2.4/3.2/4.0 mm). Housing made of durable plastic.