With Buna-N Nbr Rubber Spider, Ztuoauma 1/2'' To 7/8'' L075 Flexible 3-Piece Product Details Applications: Widely Compatible with pumps gear boxes compressors log wood splitters and more mixing equipments Accurately Manufactured Replacement for Lovejoy, Martin, Browning, TB Woods and other L-Jaw couplers Package: 3-Piece L075 series coupling set includes two coupling Hubs NBR rubber insert Dimensions: 1/2" bore with 1/8" keyway and set screw on one coupling hub; 7/8" bore with 3/16" keyway and set screw on the matching coupling hub Material: Made of high-strength HT250 steel which can ensure great strength and durability, NBR rubber insert can reduce vibration and shock and provide more flexibility. 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.