Please note, the guide will stretch over the Oster 76, Andis UltraEdge or CeramicEdge blade size #000 and #1. All you have to do is fit the metal clips on the bottom of your detachable blade, and stretch the guide over the teeth of the detachable blade. You will see on the guide that the silver circle piece is located in the middle, if you pull the metal clip part of the guide down, you will notice it stretch to the point where the silver circle will reach its end. If you are having issues, please use your hand and pull on the metal clip on the guide down. You will notice a spring like mechanism that will let you stretch the metal clip on the guide to fit over your detachable blade. Everything is factory new. Andis Professional 9pc Comb/Guide/Guard Set – NEW Item No: 12995. 9 piece comb set. Size: #0, 1/16″, 1.5 mm #1, 1/8″, 3 mm #2, 1/4″, 6 mm #3, 3/8″, 10mm #4, 1/2″, 13mm #5, 5/8″, 16mm #6, 3/4″, 19mm #7, 7/8″, 22mm #8, 1, 25mm. Works best with blade sizes 000 and 1. For use with Andis detachable clippers and most other brands. Andis Ceramic Advanced Clipper. Oster Classic 76 Clipper. Oster Turbo 111 Clipper. Oster Model 1 Clipper. Oster Model 10 Clipper. Wahl Rapid Fire Clipper. All merchandise is carefully bubble wrapped and examined before leaving our facility if applicable. If it is First Class, the United States Post Office does not provide a time frame. It’s possible during holidays, that your item may arrive a little late. If you need it sooner, please message me. Please notify us before returning the product back and the reason. If it has been over 30 days, please contact Andis. The item “Andis Universal 9pc Comb / Guide / Attachment Set 12995-Fits Andis BGRV, Oster 76″ is in sale since Thursday, March 1, 2012. This item is in the category “Health & Beauty\Shaving & Hair Removal\Clipper & Trimmer Parts”. The seller is “chopmyhair” and is located in Houston, Texas. This item can be shipped worldwide.