7PCS Pneumatic Sanding Machine Set Aluminum Grinding Pen 70 000rpm High Rotati '
1 Grinding Pen (with 2.38mm collet). 1 Empty Oil Pot. Pencil length: 148mm. Stainless steel rotor, 70,000RPM high speed, 30mm long wear-resistant blades, with long durability and long service lifespan.