AceTech BLASTER Tracer Unit TanACETECH Blaster featured with muzzle flash flame + tracer and only tracer or flame mode, IP65 waterproof. Both the Bifrost and Blaster have built in rechargeable long lasting Li Poly battery power, charging cable, Shake and Wake for quicker turn on. The effect of flame depends on volume of gas or water fog around the muzzle. The more volume it has, the better effect it is. Dimensions (L x D): 76mm x 32mm. Thread Direction: 14mm CCW (Negative). Blaster