Hex Shaft Hole Saw Mandrel, 7/16-Inch And 3/8 Inch Hole Saw Arbor With 3Pcs Product Details ?Quality Material?45 carbon steel for arbor, high speed steel Black oxide finish for central drill. ?Pilot Bit Angle?135 pilot drill for drilling in wood and metal. ?Wide Applications?Heavy duty arbor with 1/4 in. pilot bit fit most brand 3/4 to 6 inches hole saw, compatible with Dewalt, Bosch, milwaukee, Cle-Line etc. ?Locking Pins? The hole saw is securely fastened with two locking pins, improving stability, safety and preventing over tightening. ?Package Includes?1X 1/4 in. hex shank 3/8in. arbor with 1/4 in. pilot bit, 1X 3/8 in. hex shank 7/16in. arbor with 1/4 in. pilot bit, 1X1/4in. 1/4 in. pilot bit ,2X Hex Wrench, 2X Spring. 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.