HCS holesaw with tungsten carbide tips. Drills access holes in solid boards up to 25mm thick. Ideal for cable access and inspection points. Compativle with Silverline 32 – 152mm holesaw arbors and 110mm Solid Board Access Covers. Max 90rmp. HCS holesaw with tungsten carbide tips. Drills access holes in solid boards up to 25mm thick. Ideal for cable access and inspection points. Compativle with Silverline 32 – 152mm holesaw arbors and 110mm Solid Board Access Covers. Max 90rmp.