(This is for 2 light up toe plugs) AWESOME LIGHT UP RED/BLUE JAM PLUGS! The ORIGINAL and only light up Dance Plug! Sparkplugs are made from highest quality opaque urethane, not hardened and brittle imported plastics. Sparkplugs fit all 5/8-inch thread, adjustable toe stop housings such as Sure-Grip Probes, Invaders, Competitors, Classics, Carreras as well as Nova skates, Pacer model 429RTS, Model 429 Pro, Resistor plates, and Sunlites just to name a few. Sparkplugs are packaged with 20 hour rated flashing Red/Blue LEDs that nestle safely inside the plug. The LED buttons and the batteries are easily replaceable.