Half Open muzzle for use with threaded bands, tie-in bands, or both. Great alternative for those who would like to upgrade their current speargun from a notched shaft to a shark fin shaft.
28mm I.D. will fit speargun barrels with 28mm OD (ex: Cressi, Beuchat, etc)
16mm standard Euro threads that fit most Euro bands like Cressi, Mares, OMER, Salvimar, Picasso, etc.
Will accept regular threaded bands in pairs and circular threaded bands.
