2pcs Multi Guitar Spanner Wrench Tool Set For String Instruments Maintenance and Setup Use

Precision-Ground Flat Surfaces for Accurate Height Positioning: Each piece has parallel top and bottom faces with consistent thickness across the entire surface. Place the shim under a saddle or nut, and the even faces provide a stable, level platform that does not tilt or rock under string tension Rigid Construction Maintains Thickness Under String Pressure: The material resists compression when placed between the saddle and the bridge or nut slot. Install the shim under tensioned strings, and the solid body keeps its original thickness, preventing the saddle from settling lower over time Tapered or Angled Leading Edge for Easy Slide-In Installation: One end of each piece is shaped with a gradual taper or bevel. Slide the shim under the saddle or nut without loosening all strings, and the tapered entry allows insertion with minimal disturbance to the existing setup Smooth Non-Abrasive Surface Protects Contact Areas: The faces are finished without rough spots or sharp edges. Place the shim between metal or bone components, and the smooth surface glides against both parts without scoring or wearing the contact points Storage and Stacking Practice: Store shims grouped by thickness in a dry container or small pouch. When stacking multiple pieces, place the thicker shim at the bottom and the thinner one on top for stable support. Before insertion, wipe each shim with a dry cloth to remove dust. After adjustment, check that the saddle or nut sits flat on the stack without rocking