This sale is for a new 9/16" x 12" inch concrete hammer drill bit. The overall length is 12 inches and it will drill 10 inches deep. It has a sds plus shank and carbide tipped. . It will work in all hammer drills that accept sds plus shanks. It is made by Makita. This is a quality bit made in Franca not the Chinese junk that is out there.       Free shipping in the USA.  Email with questions