5pcs Diamond Grinding Burr Drill Bits 4mm Grinding Diameter For Rotary Tool

Features: brand new and high quality. Alloy electroplated diamond grinding rod mill. High strength and hardness. Fine workmanship easy sanding. Durable in use. Used for grinding mold processing and repair stone carving child carved line cutting grinding engraving jade carving glass engraving cleaning casting forging welding pieces of flash burrs weld. Teeth grinding. Various mechanical parts chamfering and groove processing. Pipe cleaning the hole and surface finishing machinery parts. Can be installed for use on electric grinder engraving machine pneumatic engraving pen. Specifications: Brand new Material: Diamond Color: Silver Total length: approx. 45mm Grinding diameter: approx. 4mm Shank diameter: approx. 3mm Length of Grinding: approx. 10mm Package Contents: 5 x Diamond Drills Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.