Stuffing tube with stainless steel shaft, drive dog & bullet nut. Options:- 3mm or 4mm Diameter shaft.- Stuffing tube lengths: 150, 200 or 300mm long. Includes: Shaft, stuffing tube, drive dog, and bullet nut.Specs:Shaft material: StainlessStuffing tube material: BrassBushings: Metal3mm shaft has a stuffing tube with a 6mm outside diameter.4mm shaft has a stuffing tube with a 8mm outside diameter. NOTE:-For use in scale applications of 20,000 rpm or less.