3-15/16 Inch Hole Saw With Arbor Mandrel,Hss Bi-Metal Heavy Duty Steel, 100Mm Product Details Hole Saw made of top HSS Bi-Metal for Heavy Dusty capability improved durability with Rust-proof. design for increased durability and outstanding cutting performance. with higher hardness , higher toughness, higher cutting strength and stronger wear resistance. It is made of heat treated carbon steel alloy. Heavy Duty, Durable and Rust-proof. Built tough for repeat use and handy for working on cornhole boards and plastic.Hole saws can cut 2.5 inch diameter holes in wood, plywood, plastic, drywall, soft plaster, cornhole boards and thin metals. In addition to punching cans or recessed lights, punching saws are also suitable for home projects on air ducts, speakers, ceiling lamps, etc. Upgraded design with ultra sharp serrations,Increased wall thickness of hole saw improves durability and minimizes tooth loss,Drilling with sharper Positive Rake Tooth cuts material faster than other brand.more durable with longer life than other brand hole saws. High-quality bi-metal band and the best cutting performance of HSS teeth combines with Non-binding clean edge design?With the non-binding clean edge design,ensures smooth and clean cutting of the hole saw blade.The spring on the drill would automatically pushes the disc out of the saw immediately after completing the hole. VLSYJL is committed to providing consumers with 100% satisfaction. Our goal is always to create perfect products for consumers Please contact to us on your order page if having any issues with our Hole Saws . In order to give you a better shopping experience, we are more than willing to help you solve all questions about the product. 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.