Bonvoisin Flaring Tool for HVAC 1/4–3/4 in — 45° Eccentric Single-Flare with Clutch & Limit Stop

This one-piece flaring tool combines an eccentrically mounted hardened-steel cone, a clutch-equipped rotating handle, and a stop/limit piece to deliver uniform single flares quickly and with minimal effort. Built from aluminum alloy for portability, it supports common inch-sized tube diameters and is intended for soft metals such as copper and aluminum. The tool is focused on single 45° flares only and is optimized for field service, repair, and light fabrication jobs in HVAC, refrigeration, and similar trades.

How does the eccentric cone improve flare quality?

The eccentric-type cone rolls through the tube end as it forms the flare, producing a smooth metal flow and even flare walls across the full circumference. This rolling action reduces localized wear on the cone and minimizes thin spots on the flare, helping create reliable seating surfaces for fittings.

• Eccentrically mounted hardened-steel cone for rolling metal flow
• Uniform wall thickness reduces leak-prone thin areas
• Designed specifically for single 45° flares on soft tubing

What features make the tool fast and easy to use on job sites?

The built-in limit piece lets you set a precise tube insertion depth so each flare starts at the same position without repeated measuring. A clutch in the rotating handle disengages automatically when the flare cycle finishes, preventing overworking the cone or tube and simplifying one-handed operation in tight spaces.

• Limit piece gives repeatable tube length control for consistent flares
• Rotating handle with clutch disconnects when complete to avoid overtightening
• Aluminum alloy frame keeps the tool under 1 kg for reduced fatigue

Which tube sizes and materials are compatible with this flaring tool?

This Bonvoisin tool supports common inch-size outer diameters used in HVAC and refrigeration: 1/4", 5/16", 3/8", 1/2", 5/8", and 3/4". It is intended for soft metal tubing—copper and aluminum—where single 45° flares are the correct joint form. Note that it does not create double flares or other specialized flare geometries.

• Fits 1/4" through 3/4" outer-diameter tubing (inch sizes)
• Recommended for copper and aluminum soft tubing only
• Produces single 45° flares; not suitable for double flares

How durable and portable is the Bonvoisin flaring tool?

Constructed with a hardened steel cone for wear resistance and an aluminum alloy body for low weight, this tool balances longevity and ease of handling. The compact one-piece frame fits in a toolbox or service bag, making it practical for technicians who travel between job sites.

• Hardened-steel flaring cone resists wear for extended service life
• Lightweight aluminum alloy gantry reduces hand and arm fatigue
• Compact footprint for easy storage and transport; includes clamp

Who is this for? HVAC and refrigeration technicians, field service professionals, DIYers working on air-conditioning or refrigeration systems, and anyone needing reliable single 45° flares on inch-size soft-metal tubing. Choose this Bonvoisin flaring tool if you want a portable, repeatable single-flare solution with depth control and an automatic clutch for faster, safer operations. Note: this tool produces single flares only and is not intended for double-flare applications.