Hordion Guitar Repairing Tool Kit with String Organizer String Action Ruler Gauge Measuring Tool Hex Wrench Set Files Fingerboard Guard Understring Radius Gauges Guitar Fret Rocker Leveling for Guitar Ukulele Bass Mandolin Banjo Features: File: Diamond files include equal flat, round and semi-circular shapes. Screwdriver: There are two ways for screwdrivers: you can adjust the length of the screwdriver and change the head of the screwdriver by pressing the round iron plate in the middle of the screwdriver. Double-Sided Stainless Steel Ruler: 5.9 inch precision ruler, used in the manufacture and maintenance of musical instruments, made of long-lasting stainless steel. Nut Bridge Saddle Groove Grinding File Tool Kit: Number of files: 13 round files (0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.0mm, 1.1mm, 1.2mm, 1.4mm, 1.6mm) and 1 Flat files Radius Gauge Under Chord: Including: 7.25", 9.5", 10", 12", 14", 15 ", 16 ", 17" and 20" radii, A must have for bass guitar maintain and adjustment. Specifications: Size: 8.1 x 3.9 x 2inch / 20.5 x 10 x 5cm(L*W*H) Material: High Quality plastic & metal Package Include: 1 x screwdriver 1 x steel ruler 1 x string action ruler 1 x 3 in 1 guitar string winder cutter pin puller 1 x nut bridge saddle grooves sanding files tool kit 1 x storage bag 2 x fingerboard guard 1 x guitar fret crowning file 1 x guitar fret rocker leveling 3 x file, 3 x hex wrench 9 x stainless steel understring radius gauges (7.25" 9.5" 10" 12" 14" 15" 16" 17" 20") Customer Service: We take every customer seriously and do our best to provide each customer with a safer, more convenient and more satisfying shopping experience. If you have any questions about the product, we will provide you with a satisfactory solution as soon as possible.