Beuchat - Pair of 18mm set length rubbers 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 18mm x 22cm for 75cm Barrel 

2 x 18mm x 25cm for 90cm Barrel 

2 x 18mm x 28cm for 100cm Barrel 

2 x 18mm x 32cm for 115cm Barrel 

2 x 18mm x 38cm for 125cm Barrel