Product Name: Universal three-jaw drill chuck for electric grinder Product Size : Common motor selection specifications: 180 motor - 2.0mm shaft diameter 385 motor - 2.35mm shaft diameter 555 motor--3.17mm shaft diameter 775 motor--5.0mm shaft diameter Color: As shown in the picture Product Material: Copper Aluminum Alloy Product features : 1.Universal three-jaw drill chuck is a tool accessory for electric grinding or drilling. It features a three-jaw design that clamps the workpiece securely to ensure stability and accuracy of work. 2.The collet is usually made of sturdy metal material for durability and strength to cope with high speed rotation and large work loads. 3. Their design makes them suitable for workpieces of various sizes and shapes, providing flexibility and versatility. Electric grinder holders are one of the common tools utilized in industrial, manufacturing and restoration fields to effectively perform grinding, drilling and machining operations Attention. 1. as we all know, different computers display different colors, the color of the actual item may be slightly different from the pictures below. 2. If you have difficulty in choosing the size, you can always contact us, we will give you some suggestions, but only for your reference. Shipment Includes 1 pcs Universal Three Jaw Drill Chuck for Electric Grinder