Round Fine Green SSG390 use doesn't need much to finish sanding on contoured or concave surfaces. Holey Galahad is engineered to "open a window to your work" - no stopping to lift the grinder and check your progress.
Discs can be used on both their face and edge surfaces. Made of durable Tungsten Carbide, no heat build up. Fits most 4-1/2" (115mm) and European 125mm angle grinders with our Recessed Universal Nut. Maximum 14,000 RPM. Discs are 4" (100mm) in diameter and feature patented structured tungsten carbide teeth bonded to steel discs over the total cutting surface. Tungsten carbide needles are manufactured in a 5-stage patented process. Made in USA.