ITEM NAME:8pcs Black Vertical Piano Caster Cups Protector Rubber Pad Anti-Shock LLD ZCD Descriptio n Feature : - Designed to be placed under a piano legs in order to protect floors and carpets - Heavy duty advanced plastic design - Designed for use with pianos - Protects wood, tile, and carpet from piano caster damage Describe ï ¼Å¡ Material: plastic Color: Black Dimensions: bottom diameter 88mm, inner diameter of the groove 53mm Product list: Piano mats * 2 sets (1 set of 4 ï ¼Å’total 8 pcs) Product use: 1. Disperse the force area of the piano wheel and protect the floor from being crushed by the piano wheel. 2. Make the piano stronger and not slip due to external influences. 3. Avoid contact between the piano wheel and the ground, not easy to rust, super strong pressure-resistant plastic production, wear-resistant, can load more than 300 kg High quality buy, happy buyï ¼ 8pcs Black Vertical Piano Caster Cups Protector Rubber Pad Anti-Shock Useful.Disperse the force area of the piano wheel and protect the floor from being crushed by the piano wheel. - Designed to be placed under a piano legs in order to protect floors and carpets. Product list: Piano mats 2 sets (1 set of 4 ï ¼Å’total 8 pcs).