The H.30® general purpose handpiece has prelubricated ball bearings that do NOT require any additional lubrication. Comes with HPCK-0 Chuck Key in molded plastic handle for changing accessories. Replacement chuck keys are shown below in related products. 5-3/16″ long, 1″ dia., wt. 5.85 oz., ship wt. 9.1 oz. Various bench top tools attach to this versatile handpiece, such as the Foredom drill press, Angle Grinder Attachment, Right Angle Collet Adapter, Belt Sander Attachment, Filer, Handpiece Holder, and AllSet® Stone Setting Kits.