Lyncsedar HVAC Copper Swage & Flare Drill Bit Set, 11-Piece Carbon Steel Kit — 1/4"–7/8" Hex Shank, Rust-Resistant

LYNCSEDAR's 11-piece swage and flare drill bit set is a compact HVAC tool kit that expands and flares soft copper, aluminum and brass tubing for reliable butt joints and 45° flares using any standard 1/4" hex-shank drill.

This combo pack pairs six swaging bits with five flaring bits to cover the most common HVAC and plumbing tube sizes from 1/4" (6 mm) through 7/8" (22 mm). Each bit sports a 1/4" hex shank so you can use a corded or cordless electric drill instead of specialized manual tools. Made from forged carbon steel with a rust-resistant finish, the bits are hardened and precision-machined to hold tolerances and resist wear on frequent jobs.

How do these bits make pipe joining faster on the job?

Instead of hand-operated expanders or bulky press tools, you insert the correctly sized swage or flare bit into a drill and rotate the tube into shape quickly. Swaging enlarges the tube end for straight butt connections while flaring forms a 45° cone for fittings and valves. This reduces setup time and lets you complete multiple connections in minutes with consistent geometry.

• Includes sizes: 1/4", 3/8", 1/2", 5/8", 3/4", 7/8" swages; 1/4"–3/4" flares
• 1/4" hex shanks fit most drills—no adapter required
• Quick rotation-based expansion speeds repetitive tasks
• Replaceable bits let you swap only worn sizes to save cost

Will these bits survive heavy daily use?

The set is forged from high-density carbon steel and finished to resist corrosion, delivering greater hardness and impact resistance than softer alloys. Heads are precision-machined so they maintain shape and concentricity after repeated cycles, which helps preserve seal quality and reduce leaks when installed correctly.

• Forged carbon steel construction for durability
• Rust-resistant surface treatment extends service life
• Precision-machined heads retain size accuracy over time
• Designed for repeated HVAC and refrigeration work

What tubes and applications are compatible with this kit?

The bits are intended for soft copper tubing but also work with softer non-ferrous metals like aluminum and brass commonly used in refrigeration and plumbing. Use swages for butt joints and flares for connections to valves, nuts and fittings. Avoid using on hardened steels or stainless where the bit material and design are unsuitable.

• Ideal for residential and commercial HVAC lines and refrigeration service
• Works with copper, aluminum and brass tubing of listed sizes
• Not recommended for hardened steel or stainless tubing
• Heat develops during expansion—allow tubing to cool before handling

Who is this for: Technicians, HVAC installers, refrigeration repair specialists and DIY homeowners who need a compact, drill-powered alternative to manual expanders and flare tools. The kit suits field service work and shop use where speed, portability and the ability to replace single sizes are priorities. If you frequently join soft-metal tubing for air conditioning, refrigeration or water lines and want a durable set that fits standard drills, this LYNCSEDAR combo offers a practical balance of coverage, compatibility and long-term value.