Corrosion Protection Excellent rust and corrosion protection
Material: 304 A2 stainless steel
Standard: GB/T845
Thread diameter: M4 (4mm), M4.2 (4.2mm), M5 (5mm), M6 (6mm), M8 (8mm)
Usable length: 6mm-100mm (not including head length)
Packing: plastic packing