The Royal EZ Dig 80mm, Approximately 3 1/8" Carbide Grit Core Bit Replacement is a high-quality tool designed for drilling and breaking tasks. Made of durable diamond material and manufactured in Canada by Royal Adhesives & Sealants, this core bit is a reliable option for professionals in the construction and demolition industries. With its specific 80mm size and carbide grit design, this product is sure to provide efficient and precise results for a variety of applications. A little larger than 3" to allow 3" pipe to go through with an adhesive.