The 341D Cartridge Roll is a versatile abrasive for deburring, polishing, finishing, and grinding applications. Made with aluminum oxide and a cloth backing, it features a closed coat with a P100 grit. Its overall length is 1.0" (25.4mm) and overall diameter is 0.5" (12.7mm) with a center hole diameter of 0.125" (3.175mm). Each roll weighs 0.939 lbs and comes in a pack of 100. Compatible with die grinders, it is a reliable choice for a variety of tasks.