Beuchat 16mm set length rubbers PAIRS for screw in muzzle spearguns. 

Each end of the rubber has an industry standard thread used by most manufacturers.  One end screws into the muzzle of the speargun and the other end screws in wishbone.

SIZES:

2 x 16mm x 13cm for 50cm speargun barrel 

2 x 16mm x 18cm for 75cm speargun barrel 

2 x 16mm x 20cm for 90cm speargun barrel 

2 x 16mm x 22cm for 95cm speargun barrel 

2 x 16mm x 25cm for 100cm speargun barrel

2 x 16mm x 28cm for 115cm speargun barrel