Safety protective cover can redirect debris and sparks away from the user without interfering with the task at hand, Improve work safety. Rotary tool shield can be quickly adjusted into position, provides easy access to the accessory without interfering with the workpiece. Transparent Shield Design, Clear field of view, convenient to observe the workpiece when carving and polishing, improve work efficiency. Easy to install, just simply unscrew the nose piece of the rotary tool and attach the shield in its stead. Applied to cutting, sanding, grinding and polishing. Compatible with Dremel Tools Model: 100, 200, 275, 285, 300, 395, 398, 400, 770, 800, 3000, 4000, 8100, 8200, 8220, 4200 (It can NOT fit any other model not on the list.) Specification: Material: Reinforced Flame Retardant PC Color: Black + Transparent Item Size: 30 * 58 * 51mm / 1.2 * 2.3 * 2.0 inch Adapter Internal Thread: 17mm/ 0.67 inch Compatible with: Dremel Rotary Tools 100, 200, 275, 285, 300, 395, 398, 400, 770, 800, 3000, 4000, 8100, 8200, 8220, 4200 (It can NOT fit any other model not on the list.) Package Includes: 4 x Electric Grinder Protective Shields