ITEM NAME:11pcs/set Luthier Tools Multifunction For Guitar Understring Radius Gauge Bass Features: 9 Understring radius gauge, accurately measure fret board radius, a must have for bass guitar maintain and adjustment. 32 blades per feeler gauge, a guitar common spacing chord distance measure tool, for easy clean up. Wide Application: Can be applied to measure all kinds of electric guitar, electric bass, acoustic guitar and so on. Convenience to Store: The guitar measure tools are all with small size,&;nbsp; easy to store, don't take too much space. Package Included: the package comes with 1 set of understring tadius gauge and 1 set of blades feeler gauge and Keychain. Range of usages: The guitar measure tool can be applied for measure the height of fret and strings, sound pick-up and strings, and the unevenness of the fret, level of fingerboard, width of pillow on the groove, deformation degree of the guitar neck. Specification: Material: Stainless Steel Understring radius gauge size: About 7x7 cm/2.76x2.76 inch(L*W) Blades feeler gauge: About 9.5x1.5x1.5 cm/ 3.74 x 0.59 x 0.59 inch(L*W*H) Package includes: 9 x Understring radius gauges 1 x 32 Blades feeler gauge 1 x Keychain Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement..9 x Understring radius gauges. width of pillow on the groove, deformation degree of the guitar neck. 1 x 32 Blades feeler gauge. sound pick-up and strings, and the unevenness of the fret, level of fingerboard.