The Kowood 24X Router Bits Set For Professional Woodworking Has A 1/4-Inch Shank Product Details 1. This router bits are designed for portable and desktop woodworking machines and cannot be used on machines such as electric drills and drill presses. 2. Can be used for hard wood, softwood, synthetic board and so on to produce a smooth surface, but to avoid processing copper, iron and other metal materials and sand, stone and other non-wood materials. 3. If you need to use a collect, please select the appropriate size collect. 4. Use appropriate glasses and ear protection when operating.body, clothes and other debris can not be close to the working tool. The maintenance of router bits: (1) The router shank is in high-speed during operation, timely replenishment of lubricating oil is very important for the service life of the shank, so a little lubricant should be added after 2-3 hours of work. (2) Keep the router bits clean. After use, remove the resin, wood chips and other contaminants from the wood and use standard industrial solvents to clean the bits. ? DURABLE STEEL BODY - Boasting alloy blade, balanced craftsmanship and a solid hardened steel board these woodworking tools can withstand some heavy duty use and the test of time. Their clever anti kickback design ensures safe installation ? USE OF SAFE - The 1/4 inch shank bits provide greater stability and less vibration during use ? WIDELY APPLICATIONS - These tongue and groove router bit set is truly versatile for your extra convenience. Works great with woods, MDF, particle board, plywood compact panel. ?DO NOT cutting ferrous metal and non wood materials, such as: steel, iron, sand, etc? ? EASY TO STORE AND CARRY - The included wooden case is sturdy and makes storing the high-quality router bits convenient while in-between jobs or DIY home improvement projects. The case also helps protect the bits while traveling to work on the go or remote site locations ? VERSATILE TOOL SET - Includes 24 Pieces 1/4 Inch Shank Router Bit Set, easily accomplish a wide range of tasks. We provide 100% satisfaction service,due to the huge amount of shipments, the goods will be sent wrongly. If you find that the goods you received are not the goods you ordered, please contact customer service in time to return 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.