Product Name: Guitar Neck ShimsProduct size: 0.25-degree taper from 0.030 \" to 0.019 \" (0.76 mm to 0.048 mm)0.5-degree taper from 0.028 \" to 0.008 \" (0.71 mm to 0.020 mm)1-degree taper from 0.060 \" to 0.010 \" (1.52 mm to 0.025 mm)Product color: As shown in the pictureProduct material: Canadian mapleProduct features:1. Used to change the angle of a bolted guitar neck2. Made of solid maple to match the guitar neck3. Better than the typical homemade \"guitar pick\" neck joint shims, which create an undesirable gap, these tapered shims cover the entire neck heel4. Have these on hand for a quick turnaround on this common repair 5. The set includes 3 hard maple shims in the following tapers: 0.25-degree taper, 0.5-degree taper, and 1-degree taper Description: Brand: Muspor This set includes 3 hard maple shims, each with a different taper to change the pitch of any bolted neck: 0.25-degree shims offer the most versatility, stacking them allows you to truly dial in the neck angle you're looking for. The 0.5-degree taper is the one you'll use most often, it works great on Fender and many other solid guitars. The 1-degree taper for guitars with a Tune-o-matic bridge or Floyd Rose. Dimensions: 2-3/16 \" x 3 \" (55.56 mm x 76.12 mm) Precautions: 1. As we all know, different computers display colors differently, the color of the actual item may vary slightly from the following images. 2. If you find it difficult to choose the size, please feel free to contact us, we will give you some suggestions, but it is for your reference only. Package includes: 3 Pcs Guitar Neck Shims