16PCS Motors Blind Hole Guide Bearing Puller Internal Extractor Installation Removal Tool Kit with Slide Hammer Toolhammer assemble 2.5 jaws.Split collet type Blind / Internal /Bearing PullerThread:M101.5p, M101.5p,M81.25p, M101.5p M61.0p10 x Collects ( segment grip type)8-11mm12-17mm13-23mm18-23mm24-29mm30-34mm34-38mm39-43mm44-48mm49-53mm54-58mmScrew adaptorsM10x1.5p, M10x1.5p/M8x1.25p, M10x1.5p/M6x1.0p1 x Counter stay pullerCollets are made from chrome molybdenum steelFor both the Professional and DIY use.Turn and they expand to grip the inner bearing race.For removal of Pilot Bushes Bearings etc. form blind housings.Comes within a blow moulded case.