Premium blue zirconia flap discs. The conical T-29 shape has a traditional fiberglass backing that wears down as you use it. The flat T-27 shape has a plastic back that can be trimmed down. Applications include stock removal, grinding and blending of welds, castings and other metal finishing. All discs are also available with an optional 5/8-11" threaded hub (just call 800-814-7358 to order flap discs with center hubs...)
