Feature:1. 5-in-1: string winder + string action ruler + string cutter + pick case + hex wrench.2. String Winder: Replace your strings in seconds.3. String Action Ruler: Perfect accurate action measurements.4. Pick Case: Can hold 1-5pcs picks of different size.5. Hexagon Wrench: Diameter: 4mm, for many usual guitars.6. String Winder: Replace your strings in seconds.Notched head removes bridge pins quickly and safely.7. String Winder: Replace your strings in seconds. Notched head removes bridge pins quickly and safely.8. String Action Ruler: With scale to measure string height, bridge saddle height, saddle slot depth, pickup polepiece height, fret slot depth and nut height. Perfect accurate action measurements for string instruments such as guitar, bass, etc.9. Cutter: High leverage handle design to cut thick strings easily. Comfortable rubber handgrips.10. Pick Case: Can hold 1-5pcs picks of different size. Hexagon Wrench Diameter: 4mm, for many usual guitars.11. Cutter: High leverage handle design to cut thick strings easily. Pick Case: Can hold 1-5pcs picks of different size.Specification:Features:5-in-1: string winder + string action ruler + string cutter + pick case + hex wrench.String Winder:Replace your strings in seconds.Notched head removes bridge pins quickly and safely.String Action Ruler:With scale to measure string height, bridge saddle height, saddle slot depth, pickup polepiece height, fret slot depth and nut height.Perfect accurate action measurements for string instruments such as guitar, bass, etc.Cutter:High leverage handle design to cut thick strings easily.Comfortable rubber handgrips.Pick Case:Can hold 1-5pcs picks of different size.Hexagon Wrench:Diameter: 4mm, for many usual guitars.Specifications:String winder material: PlasticHexagon wrench material: MetalCutter material: MetalRuler material: MetalPick case material: PU leatherPackage size: 11 * 7 * 3cm / 4.3 * 2.8 * 1.2inPackage weight: 77g / 2.7ozPackage List:1 * String Winder1 * String Action Ruler1 * Cutter1 * Pick Case1 * Hexagon WrenchPackage List:1 * String Winder1 * String Action Ruler1 * Cutter1 * Pick Case1 * Hexagon Wrench