Draper Diamond Core Bit

This 78 x 170mm diamond core bit offers a substantial diameter suitable for larger waste installations, soil pipes, substantial ventilation ducting and various building services applications. The 78mm size is particularly useful for commercial installations and renovation work where larger diameter penetrations are required for modern building services. Featuring robust laser-welded diamond segments, this bit delivers reliable cutting performance through brick and concrete blocks in dry cutting applications. The 1/2" BSP threaded arbor connection ensures secure mounting on professional core drilling equipment, providing the stability essential when drilling larger diameter holes. At 170mm length, this variant maintains good control whilst offering adequate depth for standard masonry construction, making it a valuable tool for professional tradespeople.