Piano Tuning Wrench Hammer: Small and exquisite, convenient to carry it,L-shape design, easy to use it.The L-shape wrench and the square socket is good design for tweaking the piano pins. Piano Tuning Mute Kit: Superior and professional material made and the piano mutes are made of durable rubber to assure long time use.YOU WILL LOVE THOSE TOOLS! Felt Temperament Strip: The temperament strip is used to mute off the outside strings is enough to tune two octaves at a time. High Quality kit: This kit would do a great job not only in a full piano also in some touch-ups between professional tuning. Good for , apprentices, students, or anyone wanting to learn piano tuning. Wooden design: This tuning hammer with wooden is for ease and comfort while doing mute job.Quality Mute Clamp and Rubber Mute with Handle very easy to work on the right section. colour: Red + Blue + Wood Color storage bag:random color,' accept the specified color Material: Metal + Rubber + Felt Package Contents: 1 x Tuning wrench 1 x Cleaning Cloth 1 x storage bag 1 x Felt temperament strip 4 x Rubber mutes triangular 2 x Rubber mutes with wired handle Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.