Description: Brand new and high quality. It is mainly used for diy polishing, cutting, polishing, wood, metal and mold polishing. The grinder engraving kit is essential for DIY carving and grinding. The converter is suitable for all drill chuck larger than 10mm. The conversion connecting rod can be mounted on the drill for grinding, cutting tiles, glass, wood, metal polishing and so on. Specification: Material: A&B: Polished stone; C: Metal Size: A: Shank dia: about 3.0-3.2mm B: Shank 3.2mm C: Platen dia 30mm, connecting rod handle dia 10mm, wrench length 118mm Package Includes: The package detail of each style: C: 1 Set x Electric Drill Variable Angle Grinder Connecting Rod(5PCS) Note:(4 Pack) As different computers display colors differently, the color of the actual item may vary slightly from the above images. There is 2-3% difference according to manual measurement. Please check the measurement chart carefully before you buy the item.