Draper 240MM HEX D. CORE BIT ARBOR 43708 43708 Diamond Core Drill Bit Arbor,
240MM HEX D. CORE BIT ARBOR 43708 43708. Designed for use with diamond core drill bits. This 240mm arbor is made from hardened and tempered steel to improve strength and durability. It is compatible with all 1/2" BSP threaded arbors.