About This 【22 IN ONE】-7PCS hole saws: 1-3/16”(30mm), 1-9/16”(40mm), 2"(50mm), 2-9/16 “(65mm),3-1/8 “(80mm),3-15/16 “(100mm),4-5/16 “(110mm); 1x sds plus connecting rod(300mm, 8-21/32");1x sds max connecting rod(300mm, 8-21/32") ，1x sds plus connecting rod(110mm, 4-5/16")，3x center positioning drill bits; 1x Adaptor bar, 3x dust bag, 3 Allen wrenches, 2 screws. 【Preminum Quality Tungsten Carbide】: Made of tungsten steel and carbide, our hole saw kit boasts high tensile strength. It is extremely hard, providing excellent wear resistance valued in cutting tools, drills, and abrasives. It is highly resistant to corrosion, even in aggressive environments. 【USAGE MATTERS】: Gift with 3pcs dust collector help yyou minimize messes with dust while holw saw working. Since the hardness difference of the stones/bricks, hole saw need a bit more time than normal, please use it with flowing water when work on high hardness material, it will reduce the abrasion of the hole saw. 【SDS Plus & SDS Max Shank connecting rod】: The hole saw kit provides three different connecting rod SDS PLUS 110mm,300mm and SDS MAX 300mm, Extra gift1x Adaptor bar which are suitable for different devices. Easily drills walls, stones, bricks,or installation of air-conditioning, oil fume exhauster,sewer pipeline hole open and so on. 【Product Improvement】: The set comes with a quick-change drill connector, the previous old version was fixed with screws and was easy to get stuck when using it, this new upgraded connector can quickly and easily install and dismantle the centering drill without any deviation in operation. 【Using Tips】: If you want to disassemble the centering drill, you can press and hold the switch of the centering drill fixture, keep the switch in the pressed state, the centering drill can be easily disassembled. 【Caution】: The connector should be placed inside the product with a diameter of 110mm. When in use, it can be easily seen upon picking up. After installing the connector, the screw on the connecting rod can be either installed or not. After attaching the connector, insert the center drill and rotate until you hear a "click" sound. Tighten it before use. Overview Material : Tungsten Carbide Brand : METOTY Color : Silver Style : Industrial Number of Items : 1
