Our carbide grout removal bits are tools designed to clean out grout lines so you can replace damaged tiles or update your grout. 1/8-Inch Shafts Fit Dreme l Roto Zip and similar rotary tools.Premium Solid Carbide Construction for Excellent Wear-Resistance Comes in a professional plastic storage box to keep your tools secure and organized. Proudly Made in USA See images for more details. Compatable with Dremel 566 and 565 Tool Guide but NOT compatable with Dremel 568-01 grout removal depth setting attachment.