Ermes

M4 Axle for Ermes Pulleys

The 6.0 mm diameter axle with M4 threads is designed for mounting and replacing pulleys in equipment dedicated to freediving and spearfishing.

Available in three precise lengths to suit different technical configurations:

• 55 mm
• 60 mm
• 82 mm

Each axle is supplied complete with screws and washers to ensure safe, stable installation, providing reliability and precision when securing the pulleys.

The use of durable materials and the precision of the M4 threading ensure good mechanical strength and durability even in underwater environments, maintaining the efficiency of the mechanical components during freediving and spearfishing activities.

Mounting Kit for 3-Screw Mechanisms Without Side Pins

The Ermes mounting kit is specifically designed for 3-screw mechanisms without side pins, ensuring a solid and reliable installation. This set of components is suitable for spearfishing and freediving applications, where mechanical strength and material durability are essential.

Kit Components

• 3 M4 x 15 mm hex threaded inserts in stainless steel, offering high corrosion resistance in marine environments
• 3 M4 x 14 mm round-head screws, designed to provide a secure grip and minimize bulk

The use of stainless steel ensures long service life and retention of mechanical properties even when submerged, while the 3-screw configuration provides stable, precise mounting.

Single Pretensioning Pulley for Dyneema Bands

This pulley is specifically designed for single pretensioning of a pair of bands tied with Dyneema, commonly used in spearfishing for spearguns.

Made from durable materials, it ensures excellent mechanical reliability and long service life, essential for keeping band tension consistent during underwater use.

Technical Features

• Outer diameter: 18 mm
• Integrated hole for direct mounting to the speargun, ensuring a stable and secure installation
• Compatible exclusively with pairs of bands tied with Dyneema for maximum efficiency in force transmission

The pulley enables precise pretensioning of the bands, improving smoothness and tracking cadence when swinging the speargun.

Adapter for Vertical Reels on Spearguns

This adapter is specifically designed for the secure and stable mounting of vertical reels on spearguns, optimizing efficiency during freediving and spearfishing.

The adapter’s construction ensures a solid connection between the reel and the speargun, providing smooth line management and making fish retrieval easier.

Main Features

• Specific compatibility with vertical reels
• Optimal mounting on spearguns
• Durable materials for good mechanical durability in marine environments
• Easy installation and secure reel fastening

Advantages for Underwater Use

• Improves line control during the dive
• Helps maintain balanced speargun trim
• Reduces the risk of jams thanks to stable mounting

Reel mounting kit

The mounting kit allows reels to be installed without using self-tapping screws, ensuring a safer, longer-lasting installation—ideal for freediving and spearfishing applications.

Kit components

• 2 M4 x 15mm blind-bottom threaded hex inserts in stainless steel
• 2 M4 x 14mm round-head screws
• 2 spring conical washers to ensure even tightening and proper force distribution

Technical specifications

The kit is made entirely of stainless steel, a corrosion-resistant material for marine environments, ensuring reliability and long service life during underwater use. The blind-bottom hex inserts prevent water ingress and increase the mechanical strength of the mount. The conical washers provide stable tightening that maintains mounting precision even under movement and underwater pressure.

Plug for Speargun Barrels

The plug for speargun barrels is an essential accessory for spearfishing and freediving, designed to prevent water from entering the speargun barrel during dives.

Made from strong, corrosion-resistant materials, it provides effective protection against moisture and saltwater, preserving the integrity of the loading mechanism and the speargun’s internal components.

Its simple, secure installation ensures a watertight seal, preventing leaks that could compromise the accuracy and efficiency of the speargun.

Mounting Kit for 1-Screw Mechanisms with Side Pin

Specific kit designed for mounting mechanisms with a 1-screw configuration and side pin, ideal for assembling components used in freediving and spearfishing.

Components included in the kit

• 2 pins, 3.0 mm diameter and 15 mm length
• 1 M4 x 15 mm stainless steel threaded blind hex insert
• 1 M4 x 14 mm round head screw

The use of stainless steel components ensures high mechanical strength and resistance to corrosion typical of the marine environment, providing long-term durability and reliability. The round head screw configuration allows secure fastening while maintaining a low profile, important for optimizing trim and handling of underwater equipment.

AISI 316 Stainless Steel Threaded Insert for Speargun

Threaded insert made from AISI 316 stainless steel, a material known for its excellent corrosion resistance in marine environments, ideal for spearfishing and freediving.

The hexagonal shape combined with the external knurling ensures a secure, stable grip, allowing components to be precisely fastened to the speargun. This configuration also makes it easier to insert and, if necessary, remove from the wooden housing without damaging it.

Technical Specifications

• Internal thread: M4
• Length: 15 mm

Designed to ensure reliable, long-lasting fastening, the insert allows accessories or additional components to be integrated while maintaining the trim and functionality of the spearfishing speargun.