Product name:Lathe hand crank tailstock 
Installation taper:MT3=Mode No.3 
Self-contained function:Locking function 
Tailstock travel::0-50mm 
Center height:100mm 
Through hole:20mm 
Weight:8.5kg 
Distance of the bottom U-groove:108mm 
Tailstock extends Retracting principle:Hand holding a white wrench to the left and right to rotate Maximum stroke 55mm 
Features:Fast top tightening, fast retracting, or you can modify it yourself, Plus cylinder tail can be manually swinging, fine workmanship