They are Excellent Tools for Dismounting Gears, Pulleys Impellers, and Blowers etc.. If these elements have a tapping they can directly be dismounted using these extractors, otherwise you will need to drill and tap two holes. if this is not possible a temporary nut can be welded and removed after Dismounting. The High tensile Bolts/Studs can be adjusted in the saddle by sliding them. Suitable Tips can be used as per Tapping available in machine element. Force can be applied manually by spindle/Tommy or by using a Hydraulic Jack. all parts are made from High Grade ALLOY STEEL. Heat Treated and plated for corrosion prevention. You can use a Bearing puller attachment Fig-3 to dismount Bearings Having very Little Clearance behind them. This is made from Forged and hardened alloy steel to give excellent load carrying capacity.