Package content: You will receive 9 pieces of guitar neck shims, which are made of solid maple wood and have more resonance and stability than plastic, helping you maintain the natural sound of your guitar or bass. Suitable size: Our guitar neck shims come in three sizes (0.25, 0.5 and 1 degree), each shim measures 55x75mm/2.17x2.95 inches. Function: Guitar neck shims are used to change the angle at which the bolts attach the guitar neck for security. Our product can tilt your guitar at a precise angle without creating air pockets, which prevents wear and damage to the instrument's bottom and neck. Perfect restoration: Our guitar neck shims are a perfect restoration tool for your bass or guitar. They have a very flexible structure, allowing you to cut or sand them to your exact needs and then use them to protect your instrument from damage when the angle is incorrectly adjusted. Color: Wood color Material: Wood Package content: 9 x Guitar neck shims Only the above package content, other items are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm.