Solid Round Shank Nut Driver Set Tip Size 1/2 in 1/4 in 11/32 in 3/16 in 3/8 in 5/16 in 7/16 in Bolt Clearance 1 in Shank Length 3 in Fluted SAE Solid Round Shank Fastener Holding No For Fastener Size 3/16 in 1/4 in 5/16 in 11/32 in 3/8 in 7/16 in 1/2 in ESD Safe No Insulated No Magnetized Tip No Non-Magnetic No