★【MATERIAL AND PROCESS】-Our concrete hole saw set is made of tungsten steel and carbide, durable and works under rough conditions, but also super safe to use and simple, it will give you years of service even under punishing use.
★【10 IN ONE】-4pcs hole saw diameter: 1-3/16”(30mm), 1-9/16”(40mm), 2"(50mm), 2-9/16 “(65mm); 1x sds plus connecting rod(220mm, 8-21/32"); 3x center positioning drill bits; 1x positioning drill screw,1xHex Key Wrench, gift 5x dust catchers.
★【USAGE MATTERS】-Gift with 5pcs 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.
★【WIDE RANGE OF APPLICATIONS】-The masonry hole saw bit set fits SDS plus shank on the connecting rod works with SDS Plus tools by all major manufacturers. Easily drills walls, stones, bricks,or installation of air-conditioning, oil fume exhauster,sewer pipeline hole open and so on.
★【WARRANTY】-We offer friendly customer service so you can order worry free and start improving your home improvement right away.

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