Forstner Drill Bit Set 16Pcs 15-35Mm Punching Bit Wood Slabs Flat Wing, 16Pcs Product Details ?Durability Design ?:The bit includes a center point which guides it throughout the cut and incidentally spoils the otherwise flat bottom of the hole. ?Precisely Cut?:The cylindrical cutter around the perimeter shears the wood fibers at the edge of the bore, and also helps guide the bit into the material more precisely. ?High Quality?:Made from high quality carbide tungsten steel and being hot-treated,sharp edge,high hardness, accurate positioning,high precision,smooth cutting,impact resistance,high toughness.more smooth,less noise. ?Application??Suitable for pistol drill, bench drill, vertical drilling machine hand held electric drill, stand motor-driven drilling machine and mobile ribbon type magnetism drilling machine,etc.Perfect used for drilling precision holes in most of different types of wood, such as drawer, mounting spherical door shoot tip, perforation on wood products, and plastic products etc. ?Various Sizes?: 15mm(19/32"), 16mm(5/8"), 17mm(43/64"), 18mm(45/64"), 19mm(3/4"), 20mm(25/32"), 21mm(53/64"), 22mm(55/64"), 23mm(29/32"), 24mm(15/16"), 25mm(1"), 26mm(1-1/16"), 28mm(1-1/8"), 30mm(1-3/16"), 32mm(1-1/4"), 35mm(1-3/8"), which can meet your various needs in this professional set,drill clean flat bottom holes with no chipping,perfect to enlarge existing holes and bore any arc you need. 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.