For Bolt-On Neck Bolts, 3 Pieces Of Solid Maple Wood Guitar Neck Shimmies Are A set Guitar neck shims includes 3 solid maple , each taper different angle for changing the pitch of any bolt-on neck? 1.?0.25-degree shim is the most functional ? stack them to really dial in the neck angle that you go for. 2.?0.5-degree taper is the most common one that you use it very often, it has an excellent performance on Fender and many other solid body guitars. 3.?1-degree taper is for guitars with a Tune-o-matic bridge or Floyd Rose. 1.?Guitar Neck Shim: To change the angle of a bolt-on guitar neck. 2.?Solid maple: Why choose solid maple, because it is better than plastic to restore original music , so that we can enjoy more beautiful music .This is the bridge between the neck and the body, maple allows for better resonance and stability than plastic.The pursuit of a more beautiful sound is our goal for music?"You never hear the other side. You never hear people saying a cardboard or plastic shim ruined their guitar." 3.?Highlight Advantage?Better than the typical homemade "guitar pick" neck joint shims, which create an unwanted gap, these tapered shims cover the entire heel of the neck 4.?Keep these on hand for a quick turnaround on this common repair 5.?Package include?A Set includes 3 hard maple shims in the following tapers: 0.25-degree taper, 0.5-degree taper and 1-degree taper