Features: 100% new and high quality. It can be used for solid wood PCB carving drilling and so on. Spindle radial run-out 0.01-0.04, high accuracy. High speed, the idling can reach 12,000 revolutions per minute. Stable operation, convenient to replace the broken one. Specifications: Working voltage: 48VDC Power: 300 W Rotating speed: Maximum. 12000 RPM Torsion: 3Kg.cm Insulation resistance: >2M Dielectric strength: 400V Diameter: Approx. 52 mm / 2.05 inch Collet length: Approx. 45mm /1.77 inch Collet diameter: Approx. 16mm / 0.63 inch Motor length: Approx. 175mm / 6.80 inch Weight: 906g Package included: 1 x Spindle Motor Note: Please note that the new type and old type of this product will be sent randomly and make sure you will not mind before ordering.