? Soft bond for fast stock removal ? Highest quality aluminum oxide grain assures consistent high stock removal for tough applications ? Made with uniform grain throughout, no filler grain used in the backing ? Internally reinforced with the highest quality fiberglass for maximum safety ? Unique Super-Lock? Hub combines both a mechanical locking system and chemical bond providing one of the safest, vibration-free designs in the industry The A24N has a soft bond for fast stock removal. Constructed with the highest quality aluminum oxide grain assures consistent high-stock removal for tough applications. Expect uniform grain throughout, no filler grain is used in the backing. Internally reinforced with fiberglass for maximum safety. Type 27/Type 42 shape. Unique Super-Lock? Hub combines a mechanical locking system with a chemical bond to provide one of the safest, vibration-free designs in the industry. Used for low-grade stainless steel and ferrous metals such as iron, steel, welds, etc. Package of 10. Series: Fast Grinding Application: Metal/Stainless Diameter: 5" Thickness: 1/4" Arbor: 5/8-11" - Super-Lock Hub Max RPM: 12,200 Material: Aluminum Oxide Type: Type 27 Grit: A24N Package: 10