SIZE SPECIFICATION: Set/9 Pcs - (1.5, 2, 2.5, 3, 4, 5, 6, 8, 10 mm). TECHNICAL SPECIFICATION: Box packing, Chrome Vanadium Steel, Black Finish, Chamfered Head, Proper Heat Treatment 48-52 HRc, Conforming to IS 3082-1988, Box Packing. HSN CODE: 82041120. PRODUCT CODE: DN-KM9V.