ITEM NAME:Grinder Cover Rotary Tool Attachment Accessories for Replace A550 New Description: 100% Brand new and high quality Works to debris on a variety of applications including cutting, sanding, grinding and polishing The shield can be quickly adjusted into position, provides easy access to the accessory, and does not interfere with the workpiece Spring friction design allows for quick adjustment and accessibility to accessory Attaches onto a rotary tool in place of its nose piece for quick and easy installation Specification: Fits for 100, 200, 275, 285, 300, 395, 398, 400, 770, 800, 3000, 4000, 8100, 8200, 8220, 4200 Replace part model number: A550 Thread: 17.5-19mm/ 0.69-0.75 inch Overall Dimension: Approx. 57x47mm/ 2.24x1.85 inch Package Includes: 1 Piece of Protector Shield Cover.Replace part model number: A550. Attaches onto a rotary tool in place of its nose piece for quick and easy installation. The shield can be quickly adjusted into position, provides easy access to the accessory, and does not interfere with the workpiece.