Gstk 10Pcs Concrete Hole Saw Set ?30Mm 40Mm 50Mm 65Mm?With Sds Plus Shank Product Details ??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. Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.