2pcs 37mm Squash Ball Natural Rubber Competition Training Supplies For Professional Players Trainers

--Double yellow penalty balls are professional practice and competition balls, and other colors and yellow single penalty balls are used as primary practice balls.

--The squash ball is filled with rare gas. When the squash ball is hit, the gas expands due to friction and heat.

--Its flying speed can reach about 150 kilometers per hour. The speed is second only to badminton, the king of speed.

--Model: yellow dot, blue dot, red dot, double yellow dot

--Size: 4CM