Bass Guitar Maintenance Kit The D'Addario Bass Guitar Maintenance Kits give you everything you need to keep your instrument playing and sounding its best - from the included string winder and neck cradle to the Multi-tool and maintenance products, this kit contains all the essentials for players of every skill and style. The included storage case also provides easy access to all these products for the ultimate care for your bass guitar. High quality travel case Non-slip protective body mat String height gauge Includes other best-selling accessories such as: Pro-winder, Headstand, Multi-tool, Lubrikit, Fret Polishing System, and NS Capo Lite Case Contains individual component compartments, pockets for extra strings and magnet to hold screws, nuts, washers, etc.) Pro-winder: DP0002B Lubrikit: PW-LBK-01 Fret Polishing System: PW-FRP Multi-Tool: Screwdrivers and Allen keys NS Capo Lite: PW-CP-7 String height measuring tool Quick guide to help adjust string and pick-up height Head stand neck support: PW-HDS Protective Tabletop Mat Protects body of guitar during string changes