The 3 inch LED contact ball measures 3" in diameter, is made from poly-propylene and are the only glow contact ball on the market

The contact ball somes on two flavors, fast change and slow change as show below.

The 4 inch LED contact ball measures 3" in diameter, is made from poly-propylene and are the only glow contact ball on the market

The contact ball somes on two flavors, fast change and slow change as show below.