Mastercool 70057-A Eccentric Flaring Tool — 6 Sizes 1/4" to 3/4"
Mastercool 70057-A Eccentric Flaring Tool — 6 Sizes 1/4" to 3/4"
Mastercool 70057-A Eccentric Flaring Tool — 6 Sizes 1/4" to 3/4" O.D.
The Mastercool 70057-A is a professional-grade eccentric flaring tool designed for HVAC and refrigeration engineers. Its off-centre hardened steel cone creates a rolling action that produces uniform, leak-free flares on copper and aluminium tubing — without galling or surface damage.
Lightweight aluminium construction and an automatic torque release mechanism make this tool fast and consistent in the field, whether you're commissioning a split system or working on commercial pipework.
Key Features
- Eccentric (off-centre) hardened steel cone for rolling flare action
- Automatic torque release prevents over-tightening and flare damage
- Lightweight aluminium body — durable and easy to handle
- Large feed screw handle for low-effort operation
- Black oxide-finished, heat-treated steel flaring bars
- Flares 6 sizes: 1/4", 5/16", 3/8", 1/2", 5/8", and 3/4" O.D. tubing
Benefits
- Better sealing surfaces — rolling action produces more uniform flare walls than standard cone tools
- No galling — eccentric cone design eliminates surface tearing on soft materials
- Consistent results — torque release ensures every flare is made to the same standard
- Versatile — covers the full range of common AC and refrigeration pipe sizes in a single tool
Suitable Applications
- Split system and multi-split AC installation
- Refrigeration pipework commissioning
- Copper and aluminium tubing — 1/4" to 3/4" O.D.
- Any application requiring a high-quality 45° flare joint
Technical Specifications
| Model | 70057-A |
| Brand | Mastercool |
| Flare Sizes | 1/4", 5/16", 3/8", 1/2", 5/8", 3/4" O.D. |
| Cone Design | Eccentric (off-centre) |
| Body Material | Aluminium |
| Cone Material | Hardened steel |
| Flaring Bars | Black oxide-finished, heat-treated steel |
| Compatible Materials | Copper, aluminium |
| Country of Origin | USA |
What's Included
- Mastercool 70057-A eccentric flaring tool
- Flaring bars (6 sizes)
Frequently Asked Questions
What is the difference between an eccentric and a standard flaring tool?
A standard flaring tool uses a centred cone that pushes directly into the tube end. An eccentric tool uses an off-centre cone that rolls around the inside of the tube, producing a more uniform flare wall with less risk of galling or cracking — particularly important on softer materials like copper.
Is this tool suitable for R32 and R410A systems?
Yes. The 70057-A produces a standard 45° flare suitable for use with R32, R410A, R22, and other common refrigerants. Always follow the system manufacturer's flare specification.
What tubing sizes does the 70057-A cover?
It covers 1/4", 5/16", 3/8", 1/2", 5/8", and 3/4" O.D. tubing — the full range used in residential and light commercial AC and refrigeration work.
Can I use this on stainless steel or hard copper?
The 70057-A is recommended for soft materials — copper and aluminium. For hard or thick-wall tubing, a hydraulic flaring tool is more appropriate.
Does the automatic torque release work on all sizes?
Yes. The torque release mechanism is built into the feed screw and operates across all six flaring bar sizes.