Aiskaer Full-Color Lightweight Titanium Nitride Coating Hex Driver Wrench 4 Piece Set,Hex Screw Driver Tools Kit Set(1.5mm/2mm/2.5mm/3.0mm) Light weight, comfortable grip,alloy handletitanium nitride coating and replaceable bit Handle Color: blue, silver, gray, gold.Stainless Steel Screwdriver Bar Color: Black Total length: 6.5 inches.The wrench have magnetic characteristics. Including: 1.5MM X 1 ; 2.MM X 1 ; 2.5MM X 1 ; 3.MM X 1 FOR: Using on heli's M2 socket screw and M3 socket screw