Specifications:This understring radius gauge is perfectly fit for all kinds of electric guitar.It can offer fast and accurate bridge saddle adjustment.The tool is made of stainless steel for good rust resistance and durability. Item Name: Guitar ToolsMaterial: Metal, PlasticQuantity: 12Pcs/SetFeatures: Easy to Use, Luthier Tool, PracticalStorage Bag Size: 20.5cm x 10cm x 5cm/8.07" x 3.94" x 1.97" (Approx.)Notes:Due to the light and screen setting difference, the items color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Screwdriver4 x Allen Wrench1 x 32 Blade Feeler Gauge1 x Winder1 x String Cutter1 x Polishing Cloth1 x Ruler1 x Cleaning Brush1 x Storage Bag