1)combination screw 2)with two components assembly 3)with three components ... , TRUSS, HEX etc.Driver Types (DRIVER):PHILLIPS, POZIDRIV, SLOTTED, TRIANGLE, SQUARE, HEX, SIX-LOBE, TRI-WING.Thread size range:2mm to ... /T 3098.17Referred standard:GB/T9074.1-GB/T9074.30 combination screw