Material: high strength stainless steel,not easy to rust
Total length: 12mm / 0.47"; bit driver size: 4mm / 0.16"
Thread size: m4 x 10mm / 0.16" x 0.4"(thread d*l); weight: 14g; drive type: phillips
Main color: silver tone
Packaging included: 10 pcs m4 x 10mm head screw.