General description This Hole Saw Drill Bit Set includes 30mm, 40mm, and 50mm drill bits, along with an SDS+ extension rod and necessary accessories, making it an ideal choice for masonry drilling tasks. The set is designed for high-quality performance and durability, suitable for various applications such as installing air conditioners, range hoods, or washing machines. Technical specifications Drill bit sizes: 30mm, 40mm, 50mm Extension rod length: 350mm Material: Tungsten carbide tipped (TCT) Compatibility and accessories Includes SDS+ arbors Comes with 1 locking screw Includes 1 pilot drill bit for stabilization Usage Ideal for drilling into brick walls, red bricks, masonry walls, foam bricks, and hollow cores Not suitable for use on steel, tile, or stone Other information