This set includes 3 hard maple shims, each at a different taper for changing the pitch of any bolt-on neck: 0.25-degree shim offers the most versatility - stacking them will let you really dial in the neck angle you're after. 0.5-degree taper is the one you'll reach for most often - it works great on F*der and many other solidbody guitars. 1-degree taper for guitars with a Tune-o-matic bridge or Floyd Rose. Features: Used to change the angle of a bolt-on guitar neck. Well cut and angled shims are made of solid maple to match the guitar neck. 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. Keep these on hand for a quick turnaround on this common repair. Set includes 3 hard maple shims in the following tapers: 0.25-degree taper, 0.5-degree taper and 1-degree taper. Specifications: Material: Maple wood Degree: 0.25 / 0.5 / 0.1 ? 0.25-degree tapers from 0.030" to 0.019" (0.76mm to .048mm) ? 0.5-degree tapers from 0.028" to 0.008" (0.71mm to .020mm) ? 1-degree tapers from 0.060" to 0.010" (1.52mm to .025mm) Item Size: 76.12 * 55.56mm / 3.00 * 2.19in Package Weight: 40g / 1.41oz Package Size: 12.5 * 9 * 3.5cm / 4.92 * 3.54 * 1.38in Package List: 1 * Neck Shims