Shredder/Chipper Blade Kit, 781-0490, 742-0571. Product Details Part Numbers: 981-0490 781-0490 942-0571 742-0571. Fasteners: 710-1054 Screws 5/16"X24"X1" 736-0119 Lock Washer 5/16" 912-0411 Lock Nut 5/16" . Chipper Blade Dimensions: Length: 3-3/8" Width: 1-1/4" Thickness: 1/4" Bolt spacing on center: 1-7/8". Shredder Blade Dimensions: Length: 8-3/8" Width: 2" Thickness: 3/16" Bolt Spacing on center: 4-7/8"".Please wear gloves to protect your hands during installation. The blade is forged steel, tough and sharp. The screws are black carbon steel screws with good strength. 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.