Pin cover Material: Aluminum (optional color), copper, cost iron Thread type: M24/ M26 Stylus material: supper hard alloy Stylus hardness: 93HRA (68HRC) Marking material hardness: ≤ 60HRA (HRC30) Marking Objects : plastic, iron, copper, aluminum and other metals Marking depth: 0.1mm-5mm Stylus diameter: Φ2, Φ2.5, Φ3, Φ4, Φ5, Φ6, Φ8 ( customized supported) Thread size: M18, M24, M26, M27, M32 (customized supported), thread pitch 1mm Stylus length: 30mm, 42mm, 45mm, 53mm, 56mm, 60mm, 75mm, 76mm, 110mm (customized supported) Stylus head diameter: 10.7mm, 12.8mm, 16mm, 17.2mm (customized supported) Air Pressure :0.3-0 .6 pa