Thorstone 45 Degree Flaring Tool Single-Flare Kit — 7-Adapter Set, Cuts up to 3/4" OD

Thorstone 45 Degree Flaring Tool is a complete single-flare kit made to form precise 45° flares on soft metal brake, A/C, and plumbing tubing for reliable leak-free connections.

This compact kit bundles the core tools needed to cut, deburr, and flare tubing up to 3/4" outer diameter. Built from heat-treated steel with a forged yoke and backed by Thorstone's lifetime support, it’s designed for workshop and field use. The set handles copper, aluminum, magnesium, soft steel, and brass lines but should not be used on hardened iron or thick cold-rolled steel.

How does the Thorstone kit make a proper 45° single flare?

The kit uses a flaring cone and a flaring bar (yoke) matched to seven adapter sizes. You clamp the tube in the bar, tighten the yoke to seat the cone, and press to form a clean, consistent 45° flange that fits standard fittings.

• Seven adapters: 3/16", 1/4", 5/16", 3/8", 1/2", 5/8", 3/4"
• Forged yoke and heat-treated bar for consistent alignment
• Cone geometry designed to shape a uniform 45° single flare
• Use only on compatible soft metals to avoid cracking

What parts are included and why each matters?

The kit provides the essential pieces for cutting, finishing, and flaring tubing in one compact case—no separate tools required. Each component plays a role in producing leak-resistant connections quickly and cleanly.

• Flaring cone: forms the 45° flare
• Flaring bar/yoke: secures the tube and aligns the cone
• Tubing cutter: slices tubing from 1/8" to 1-1/8" with square edges
• Round reamer: deburrs and removes internal burrs for smooth flow
• Blow-molded case: organizes tools and protects them in storage

Which materials and applications is this tool suited for?

Designed for soft and ductile tubing, the Thorstone flaring tool works across automotive, HVAC, and light plumbing applications. It’s not appropriate for hardened materials or structural steel where specialized equipment is required.

• Compatible: copper, aluminum, magnesium, soft steel, brass
• Typical uses: brake lines, A/C refrigerant lines, HVAC, fuel and hydraulic tubing
• Not for: hardened iron, thick or cold-rolled steel, or cast materials
• Sizes cover common workshop tubing up to 3/4" OD

Who is this for: The Thorstone 45 Degree Flaring Tool suits professional mechanics, HVAC technicians, and motivated DIYers who need a reliable, portable single-flare solution. If you repair brake lines, service A/C systems, or fabricate soft-metal tubing and want consistent 45° flares with the convenience of an all-in-one kit, this set gives the cutting, reaming, and flaring functions in a durable package. Avoid using it on hardened or heavy structural metals—choose it for soft-metal tubing tasks where precise flare geometry and a tidy finish matter.