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Ermes Formula Ceramic Invert Roller Muzzle

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This high-performance invert muzzle is built entirely from nylon reinforced with 30% fiberglass, offering exceptional durability while maintaining a small and lightweight design for optimal underwater maneuverability.

At the center, it features dedicated attachment points for an inverter system, making it ideal for advanced roller or inverter speargun setups.

The 30 mm pulleys are protected by a streamlined fairing to enhance durability and hydrodynamics, and is equipped with high-speed ceramic bearings for smoother operation and reduced friction.

Two integrated O-ring seats provide a reliable watertight seal, allowing compatibility with barrels measuring 26 mm to 26.5 mm in diameter.


 Key Features

  • Material: Nylon with 30% fiberglass – lightweight and impact-resistant

  • Inverter-ready design with central mounting points

  • Pulley size: 30 mm, protected by a fairing

  • Optional high-speed ceramic bearings

  • Dual O-ring seats for watertight barrel fit

  • Compatible with 26–26.5 mm barrels

Perfect for spearfishers looking to upgrade or build an inverter system, this muzzle balances strength, precision, and hydrodynamic efficiency.

Customer Reviews

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J
Joe P.
Spear America Service is Unbeatable

The invert roller is cool, everything fit and works as expected. The staff gave me a couple fixing screws to hold it in place and shared tips to install and rig it all up

STAY IN TOUCH