The Handle Anything Chuck System enables you to turn a closed end handle for many woodturning projects like bottle stoppers, bottle openers, tools, kitchen utensils and gadgets, and lots more; Reading the included Instructions is recommended. Collet chuck base (PKHA01) is pre-threaded at 1" x 8tpi to mount on your lathe's headstock spindle; Chuck can also be mounted on a different spindle thread by using a correct adapter; Flats on the collet nut accept 7/8" wrenches (not included) for tightening and loosening. Includes (2) 7mm threaded mandrel shafts measuring 3/8" x 16tpi (PKHA02) and 1/2" x 13tpi (PKHA03); Threaded section of each shaft is 1/2" long; Total length of each shaft is 4"; Shaft slides into the headstock chuck at a variable length as needed for your project and is secured by the collet. Includes (2) Stepped Bushings so you have four size guides to work with depending on the outer diameter of your project; Bottle Stopper Bushing (PKHA04) is .800" diameter on one end and .959" on the other; The Handle Bushing (PKHA05) is .745" diameter on one end and 1.025" on the other. By using different accessories that are available separately, The Handle Anything Chuck System can be used to make Closed End pens, seam rippers, keychains, and other smaller diameter woodturning project kits.