Used but like new B13 roundover bit for countertops and similar applications. This is a diamond coated tool for long life and fast material removal. It has a female threaded mount with 5/8″ -11 threads. Estate find, looks virtually new but some minor evidence of use due to scratches showing on the rubber top. The cutting surface shows no apparent evidence of wear. Way cheaper than new. Please study the pictures carefully and ask any questions you may have. Thanks for looking and please check out the other items I have for sale.