Manufacture and supply various full series of screwdriver bits, nut setters, nut drivers, sockets, socket adapters, bit holders Screwdriver bitMaterial types ... PH, PZ, slot, Torx, square, hex, hex-plus, Z-spanner, Torx hollow, Torx plus, tri-wingOverall length: 25mm, 32mm, 50mm ... injection case, blow case, PVC bag, color boxNut driver (nut setter)Material: Cr-V steel, types: non-magnetic and ...