Proto® DuraTek™ Screwdriver Set, Measurement System: Imperial, 6 Piece, Ergonomic Quad-Lobe Handle, Screwdriver Types Included: Keystone, No ESD-Safe, Insulated: No, Specifications Met: ASME B107.15, Specifications: 1-1/2 to 12 in L Square Shank, Alloy Steel Shank, Polished Chrome/Black Oxide Tipped