Makita is the leading manufacturer of professional power tools on the market. The 192885-9 Chuck Mount – Spindle is a replacement 10mm keyed chuck, constructed from high quality steel for increased durability and a longer service life. The 192885-9 accepts drill bits with a shank up to 10mm, has a spindle thread, compatible with key 763415-9 (not included) and is suitable for use with Makita DA3000D and DA301D.