ITEM NAME:Handpiece Handle Key Drill Chuck For Flex 3 Jaws Fit Flexible Shaft For For Z5C7 Handpiece Handle Key Drill Chuck For Flex 3 Jaws Fit Flexible Shaft For For Z5C7 Connecting rod diameter:0.3-4mm Weight:179g Scope of application:hanging mill,bench mill,electric mill Small handle,easy to control,suitable for fine polishing,engraving,sanding operation Color:silver material:metal Size about:handle chuck 0.3-4mm Package Contents: 1x Electric hand shank 1x chuck key