ITEM NAME:Watchmakers Electric Drill Chuck 0.3-4Mm Jt0 Taper Mounted Lathe Pcb Mini D A5Z7 Watchmakers Electric Drill Chuck 0.3-4Mm Jt0 Taper Mounted Lathe Pcb Mini D A5Z7 Name:Drill chuck tool Clamping range:0.3-4mm Securely holds a wide range of twist drills Versatile use on impact drills and electric power driver to quickly switch tasks and keep the job moving Constructed with all metal for supreme durability Color:silver Material:Steel Package Contents: 1 * drill chuck(holding 0.3-4mm) 1 * wrench(random color) 1 * key 1 * miniature electric drill chuck(8mm for tail hole)