... 30days 5. Nice after-sale service Specification1.Thread type: machine thread, triangle thread, metric thread, tapping thread, drilling ... .3.Drive type: Slotted, Phillips, Hex Socket, Torx, Rice character type, One Way etc.MaterialCarbon steel, stainless steel, ... and trade integrationMain ProductsWood Screw, Drywall Screw, Chipboard Screw, Machine Screw, Deck Screw, Self Tapping Screw, Self Drilling ...