When you need more speargun punching power and add power bands, we recommend adding a Bolted Muzzle Reinforcement Kit, which strengthens the muzzle when adding power. Recommended when using 4 bands. Comes standard on #I Island, #W Blue Water and #4 and #5 Standard Series. For Non-Euro Speargun models.

Features:

• Stainless steel, polished

Dimensions:

• 1" Outer diameter, .25" Inner diameter washer
• 1.75" length screw
• .5" length Threaded Insert