Cressi open muzzle for Comanche, Cherokee, Pacific and  Geronimo spearguns. Cressi muzzle spigot outer diameter is 25mm, fits the Cressi Cherokee spearguns and all standard speargun tubes with 26mm inner diameter. Built in spear retaining magnet. Shooting line can be routed to the left or right. Built in stainless steel reel line guide/shooting line anchor. Plastic pin to secure muzzle in speargun tube is included.