Applicable Object:This water nozzle drill chuck is suitable for drilling machine (table drill) and drill. High Performance:Because there is a adapter between the water and the water pipe, the water can enter from the hole opener (drill bit), and the slag generated inside the hole can be easily drained under the pressure of water, reducing the broken friction between the slag and the diamond and the inner wall of the base. Wide Range Of Uses:This water nozzle drill chuck can be used for drilling hard and brittle materials such as glass, ceramics, jade, , shells, etc. High Quality Material:The water nozzle drill chuck is made of high quality tungsten steel material, which has good performance and stable running. Item Type: Water Nozzle Drill Chuck Color: Silver Material: Tungsten Steel Size: . 10 * 4 * 4cm / 3.9 * 1.6 * 1.6inch Shank diameter: 6mm, Chuck diameter: 10mm Package Contents: 1 * Water Nozzle Drill Chuck Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.