8-1/4? Hss Bi Metal Hole Saw Cutter For Wood Drywall Plastic Aluminum Mild Steel Product Details This hole saw kit includes 1pcs of 8-1/4? (210mm) hole saw, 1pcs of 0.43?(11mm) hex shank mandrel , 1pcs of silver colour O 1/4? (6.35mm) x 3.5" (89mm) HSS pilot drill Bit for wood and soft metal, 1pcs of black colour O 1/4? (6.35mm) x 3.5" (89mm) HSS pilot drill Bit for hard metal. Max cutting depth: 1-1/2?(38mm) Ideal for Wood, PVC, Drywall, Aluminum, Metal, Stainless Steel. Special kit utilizes alignment window and taller bushings to deliver accurate height placement and straight drilling with the hole saw set. Bi-metal strip is made by laser welding machine and vacuum heat treatment, providing better hardness, strength, and longer life. Stable quality and reasonable price. 100% Satisfaction Guarantee: If you are not satisfied, Free 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.