Corrosion Protection Excellent rust and corrosion protection
Material: 304 A2-70 stainless steel
Standard: GB29.2
Thread diameter: M3 (3mm), M4 (4mm), M5 (5mm), M6 (6mm), M8 (8mm)
Usable length: 5mm-60mm (not including head length)
Packing: plastic packing