Wheels Manufacturing PRESS-4 Bearing PressAn essential tool for every serious hobbyist.The bearing crimping tool is designed to crimp bottom bracket and ball bearings with an inner diameter of at least 10mm.Insertion adapter is purchased separately.The PRESS-4 consists of 2 screw handles and a 3/8´´ x 12´´ threaded rod.Scope of delivery.Threaded rod with 2 screw handles.A must-have tool for the serious hobbyist bicycle mechanic or smaller bike shop, the economical Press-4 Bearing Press is designed for the installation of bottom brackets or sealed bearings with an I.D.minimum.10mm.Press-4 package includes 2 handles and a threaded rod.Press-4 is used with separately purchased bearing adapters specific for the sealed bearings being installed.You may need to mix and match adapters for your specific use.Please check the bearing part numbers before ordering.Installs bearing sizes.2437, 6000, 6001, 6002, 6003, 6801, 6802, 6803, 6804, 6805, 6806, 6900, 6901, 6902, 6903, 6904.Use Press-4 to install your pressfit 30 bottom bracket along with our new PF30-OB chucks.Installation guides for use with Press-4.individual over-shaft adapters, individual open hole adapters.