Standard:GB Material:mild steel, aluminium, stainless steel Sample service:it is provided Standard:DIN, ANSI, JIS, IFI, BS OEM:Allowed Delivery Details:within 20days after confirming orders Dia:M3-M12 Length:10-100mm Surface treatment:copper, nickel, zinc, black finished Head type:Hex head, Advantage:good quality, competitive price, fast shipment Show More