... choice.and fit in different pneumatic nail-jetting gun high load Jumbo coil nail material:Q235,Q135 our nails diametre is 2 ... treatment is polished,vinyl, bright, Hot-Dipped-Galvanized, Electrical-Galvanized.and for jumbo coil nail, we have 1200pcs, 1500pcs, and 3000pcs so ... used in the buliding and decoration line....welcome your inqulry high load Jumbo coil nail