This is an authentic OEM approved replacement item commonly used on Makita power tools. Bearings have many useful applications that will differ depending on a tool. Ball bearings are designed to minimize friction between two rotating parts. Because they are under constant pressure. Over time due to heat and friction bearings would break down and would need to be replaced. Please note this is a sealed metal bearing that is sold individually.

Genuine Manufacturer Approved replacement parts designed for use with a variety of Craftsman Power Tools. This part is made out of Plastic and it includes Two (2) Keys per pack. The Switch Key is inserted into the switch, then the switch will be operational. This is a safety feature for unauthorized use of the tool.