Our precision screwdriver sets have 47 kinds of matte chrome-plated screwdriver bits & 9 kinds of matte chrome plated sockets. The screwdriver bit has a high-precision bite, double anti-rust treatment, pull-in switch, and incarnate 12 operation combinations, this high-end household screwdriver set can calmly deal with various maintenance scenarios, and can always control them with ease. Our precision household screwdriver sets are widely used in bicycle repair, model disassembly, home appliance repair, mechanical repair, and digital product disassembly.