Zither tuning hammer: used for tuning of and for most machine devices that have quadrilateral opening, tuner.; tuning wrench: sturdy and smooth plastic handle for comfotable use, accessories.; Wrench: overall length: approx, 16cm / 6, 3 inch, Quadrilateral tuner.; Piano tuning hammer: material: plastic, autoharp instrument.; Quadrilateral tuner wrench: side length of the quadrilateral: approx, 6, 5mm, piano tuner.

What's in the box
1 x Electronic Tuners