4 pcs. Piano Mute Blocks Tuning High Tones Accessories for Repair Instruments Blue Description: 4-piece mute blocks for piano tuning: midrange and tools, wool mute blocks, renovation tools. Portable: Made from , it is small enough to fit easily in your purse. Multiple sizes: 4 sizes of piano mute to meet different needs, suitable for mute strings. accessories: piano parts. Gift: Tuning gift for . Specification: Material: Size (L. x W x H ): approx. Length: 13 cm x 3 cm x 1,5 cm / 5,12 inch x 1,18 inch x 0,59 inch M: 9,5 cm x 3 cm x 1,5 cm / 3,74 inch x 1,18 inch x 0,59 inch S 1: 10,5 cm x 2 cm x 1,5 cm / 4,13 inch x 0,79 inch x 0,59 inch S 2: 10,5 cm x 1,5 cm x 1,5 cm / 4,13 inch x 0,59 inch x 0,59 inch The package includes: 4 blocks of piano mute