General hexagon handle input connecting rods from 1mm to 13mm with precise precision and stable performance The spanner style chuck can be used with just one hand to make quick and convenient drill changes Widely used with various drills, milling machines, lathes, drills and electric hand tools for complete centering, drilling, thread cutting and rubbing. Constructed with carbon steel material for better durability.A great accessory for all drilling tasks. We make every customer feel comfortable.If this product does not meet or exceed your expectations, please contact us first. We are honored to solve the problem for you., Weight: 1.9180216794 Pounds, Manufacturer: FTVOGUE