We all know that the tremolo chain of the thumb piano plays an important role in strengthening the vibration between the chain and the strings. And, our products contains all the tools and parts that needed in the tremolo chain installing g process, very practical and convenient. Features -Color: As shown -Material: Zinc alloy, polyester -Size: 14.00X1.50X1.50cm/5.50X0.59X0.59in - , you can these practical thumb piano tremolo chain set at an . -The compact size and lightweight design are convenient for us to store and carry. -The product is made of high-end and zinc alloy and can be used with . -The tremolo chain of the thumb piano plays a significant role in strengthening the vibration between the chain and the strings. -And, our products contains all the tools and parts that needed in the tremolo chain installing g process, very practical and convenient. Package list: 1 × Kalimba Tremolo Chain 1 × Pair of Nails 1 × Pair of Caps 1 × Tassel 1 × Pushpin 1 × Instruction Book