Designed to be used with Roller Window Shades that have a METAL ROLLER ONLY. Has larger 3/16″ pin hole and longer 5/16″ spring tab slot. May be used for a outside (wall) mount, inside or ceiling mount. Nylon Bushing prevents “Pin-Shear” adding to Roller Life Mounting screws included. FREE Standard Retail Ground Shipping to any US address. $10.95 USPS Priority Mail Shipping $14.95 Shipping to ANY International Destination Worldwide (any quantity) PLEASE NOTE: All Orders are shipped via the US Postal Service. If you do not have a valid USPS address and require UPS or FedEx shipping, you MUST contact us in advance of purchase to make arrangements. Additional charges will apply.