This air-operated rotary pen with air hose is multifunctional and suitable for sanding, grinding, polishing, deburring, drilling, engraving and more by using high-speed rotation of various accessories prepared by yourself. 2 collets and adjustable rotation speed allow more applications. Portable and compact, easy to carry with the plastic box. Note: 1. Pneumatic rotary tool only, accessories such as sanding head, grinding head and so on are not included. 2. Every time you use the pneumatic tool, please add 5-8ml lubricating oil into the air inlet and turn on to let it run for a few seconds. 3. Size and color may be slight different because of manual measurement and different light conditions. Thanks for understanding. Specifications: Main Color: Black Main Material: Alloy 2 Collets: 2.38mm/ 3mm No Load Speed: 60000rpm Air Inlet: 1/4 #34; Working Pressure: 0.4-0.6MPa Die Grinder Size: 120 * 18mm / 4.72 * 0.71in Air Hose Length: 125cm / 49in Item Weight: 236g / 8.31oz Carry Case Size (handle included): 245 * 190 * 43mm / 9.65 * 7.48 * 1.69in Package Weight: 510g / 1.12lbs Package List: 1 * Pen Die Grinder with Air Hose 1 * Replaceable Collet 2 * Spanner 1 * Carry Case