i downloaded an printed a couple different holders for the extra set of jaws that came with my lathe an every single one i printed was too small even tho the pictures shows the same machine or one that was suppose to be the same size so i just made my own. simple not much to it. the 3 jaw chuck that is on my lathe is a k11-100 or at least that is what is stamped on the face of the chuck. the jaws measure 15mm wide an alittle over 44mm long that way u can measure ur jaws an make sure they will fit before printing. its hanging behind my lathe an so far has been good, no issues, perfect fit. hope someone else finds it useful.