Features 1、OF SHARPNESS AND DURABLE: Carbide is forging with high temperature quenching, possess of sharpness edge, not easy to break when cutting, very durable 2、HIGH HARDNESS AND FAST DRILLING: Carbide head inserts have the characteristics of high hardness, strong impact resistance, and fast drilling speed, very efficient 3、SIMPLE OPERATION AND FAST PUNCHING: Thin wall core bit support simple operation, easy to use, come with fast punching speed, provide great convenience 4、WIDE USES: This cement brick electric hammer drill is widely used for cutting clean holes in concrete, brick work, drilling wall, stones, installing air conditioners, etc. 5、MASONRY BRICK BLOCK CORE REMOVAL: This thin wall core bit can realize core removal of masonry, brick, and block, useful and practical Specification Item Type: Thin Wall Core Bit Material: Carbide Color: Silver Specifications: Approx. 30mm / 1.18in Wide Application: This cement brick electric hammer drill is widely used for cutting clean holes in concrete, brick work, drilling wall, stones, installing air conditioners, etc. Package List 1 x Thin Wall Core Bit