Features 1、Used for 45 degree external thread CNC spindle, the pull claw is easy to use in the practical life. 2、With position holding function, the spindle clamp is entitled with high performance according to strict rule. 3、Via special processing section, it can keep wear prevention, which practical and useful to use. 4、After many inspections before leaving the factory, the quality is guaranteed, you can use it with confidence. 5、Entitled with pratical adoptability, its high quality can keep its high performance for a long time. Specification Item Type: Pull claw Model: BT40-45 ° BT-40 spindle pulling claw, four-lobed claw for MAS403-1982 Bt / PT1 (45 °) Spindle Taper: 7:24 Rated Rate: 8000 (rpm) Maximum Rate Temperature Rise: 300 (℃) Dynamic Equilibrium: 3 (mg) Maximum Rate Noise: 10 (db) Taper Hole Oscillation: 0.002 mm / 0.000079 in Overall Length: Approx. 86mm / 3.39in Jaw Length: Approx. 50mm / 1.97in Flange Outer Diameter: Approx. 26mm / 1.02in External Thread: M approx. 16 x 1.5mm / 0.63 x 0.06in Equipped with Pull Studs: 45 ° for 45 ° externally threaded CNC spindle Package List 1 x Pull Claw