【PACKING LIST】: Ø30mm, 40mm, 50mm drill bits, SDS+ bits, center drill and 350mm SDS+ extension rod; This high quality TCT concrete hole saw set comes with everything you need to get started. 【Necessary Parts Included】: This core drill bit set comes with 1 locking screw and 1 pilot drill bit, which is very convenient to help stabilize the drilling process and ensure that the tip of the tip does not move when drilling. 【PREMIUM MATERIAL】: This masonry cutter set is made of high quality material with tungsten carbide tip, high strength and excellent drilling performance for long-term hard drilling work, also durable enough to last for a long time. 【PRECISE CUTTING: These are tungsten carbide tipped drill bits, perfect for cutting clean holes in concrete, brick and slag block. 【WIDE USAGE】: Suitable for brick walls, red bricks, masonry walls, foam bricks, hollow cores, etc. It can be used to install air conditioning systems such as air conditioners, cooker hoods or washing machines. Note:
