Faithfull Long Impact Bit Set, 12 Piece

Amazon

Arbor Size Converter: Easily adapt diamond cutting discs and saw blades with a 25.4mm bore to fit 20mm arbor machines; for angle grinders, circular saws and cut-off tools Durable Hardened Steel - Engineered from hardened steel for high strength, wear resistance and long-lasting performance under tough cutting conditions Universal Compatibility - Works with diamond blades, masonry cutting wheels, tile saw blades, and metal cut-off discs for construction, tiling, or DIY projects Cost-Efficient - Reduce the need to purchase additional blades, use one disc on multiple machines with different arbor sizes 10-Piece Pack - Includes 10 reducing rings (bushings) with precise 25.4mm outer diameter and 20mm inner diameter; easy to install and remove in diamond blades, masonry cutting wheels, tile saw blades and metal cut-off discs; for construction, tiling, or DIY projects, Manufacturer: CorePlus

Zoro Tools

A pack or 10 reducing rings for use with Coreplus diamond cutting discs.These rings allow discs with a 25.4mm bore to also be used in machines that require a 20mm bore thus reducing the need to buy extra blades.