Check the listing for details. 30mm to 1" Rifle Scope Mount Reducer Insert - 1" 1 inch Ring Adapter - 4 Sets. Condition: New. Listed at 6.30 USD. 4 pairs of 1" Scope Ring Reducers :: Features Fits scope or barrel with 1" diameter Compatible with scope rings with 30mm diameter Two pieces split design, easy to install and remove :: Specifications Material Rigid plastic Fits 1" scope or barrel 30mm scope mounts :: Items Included Four (4) sets of 30 mm to 1" reducer inserts :: Payment & Shipping Information We prefer Paypal, but also accept all major credit cards via PayPal. Your order will be processed within 1 business day. Most items are shipped via USPS with either First Class Mail or Priority Mail depending on your purchase. :: Return Policy We offer a 14-day return period for a full refund. We pay for the shipping if an item is defective or not as described. Please e-mail us through My eBay for further details.