Scope-EZE Cheek Rests - All Thicknesses and Models Use These Stick-On Cheek Rests to Raise Your Eye Level for Proper Alignment With Your Riflescope Buttstocks that were originally supplied with iron sight rifles are often too low where your cheek rests to allow proper alignment of your eye to your scope. Our new stick-on Scope-EZE cheek rests come in heights from ¼ inch to 1-1/8th inch to give you the correct eye alignment. Each model Scope-EZE cheek rest has a different tapering thickness... They're thickest at the rear and thinnest at the front. Made from extra dense polymer foam rubber with a peel-off adhesive backing that creates a permanent installation. Wood Stocks Only... No Synthetics - Synthetic stocks have a mold releasing agent on them that keeps the Scope-EZE from sticking or adhering properly... Scope-EZE won't stick to synthetic stocks. How to Figure Thickness: The simplest way is to layer a thickness of phone book pages over the cheek rest of your buttstock and test aim to see if your eye is at the right height. Add to or reduce the number of pages until the thickness is right. Then just measure that thickness with a ruler. You will use the Scope-EZE taper that covers this thickness. How to Order: Choose the Taper Model from the Drop Menu Above.