Lyncsedar HVAC Copper Swaging & Flaring Drill Bit Set — 11-Piece Carbon Steel Bits for 1/4–7/8 in Tubing, 1/4" Hex Shank

LYNCSEDAR's 11-piece swage and flare drill bit kit is a compact HVAC toolset that expands and flares soft copper, aluminum, and brass tubing for reliable joints without specialized presses.

This combo pack pairs six swaging bits with five flaring bits to cover common HVAC and plumbing diameters from 1/4" (6 mm) through 7/8" (22 mm). Each bit uses a standard 1/4" hex shank to fit most corded and cordless drills, letting technicians and DIYers perform tube butt expansion or 45° flares quickly on site. Forged from high-density carbon steel with a rust-resistant finish, the bits are machined for repeatable shapes and long wear life.

What sizes are included and which tubing do they work with?

The set includes six swaging bits sized 1/4", 3/8", 1/2", 5/8", 3/4" and 7/8", plus five flaring bits in 1/4", 3/8", 1/2", 5/8" and 3/4". These sizes match common HVAC and plumbing tubing so you can cover most residential and commercial jobs without buying extra parts.

• Swage sizes: 6 mm, 10 mm, 12 mm, 16 mm, 19 mm, 22 mm
• Flare sizes: 6 mm, 10 mm, 12 mm, 16 mm, 19 mm
• Materials: soft copper, aluminum and brass tubing
• Standard 1/4" hex shank for broad drill compatibility

How do I use these bits with a drill safely and effectively?

Insert the matching bit into a drill chuck and rotate the tube end against the flaring or swaging head to form a uniform expansion. Work steadily at moderate speed and avoid excessive pressure; the bit shapes tubing by controlled rotation rather than force alone. Because friction generates heat, allow the tubing to cool completely before handling or assembly.

• Secure the tube firmly in a vise or holding fixture
• Set drill to medium RPM and apply steady, even feed
• Stop periodically to check fit and let the metal cool
• Use the matched size to prevent over-expansion or leakage

What construction and durability features can I expect?

Each bit is forged from high-hardness carbon steel and finished with a corrosion-resistant treatment to resist wear on the job. Precision machining preserves the swage and flare geometry so fittings seat consistently after repeated use. If one bit becomes worn, the modular nature of the set lets you replace just that size to reduce long-term cost.

• High-density carbon steel for impact and wear resistance
• Rust-resistant surface treatment for longer life
• Precision-machined heads for consistent joints
• Individual bits replaceable to lower maintenance expense

Which applications and job types is this kit best suited for?

This kit is designed for HVAC installers, refrigeration technicians, plumbers and serious DIYers who need a portable solution for tube joining, repair, and installation tasks. It works well for field repairs, new AC line assemblies, drain or water line service, and refrigeration piping where access to heavy tooling is limited. The drill-compatible design speeds up onsite work without sacrificing control.

• Residential and commercial HVAC maintenance
• AC installation and refrigeration repair
• Water line servicing and drain pipe renovation
• Field repairs and mobile technician kits

Who is this for: The LYNCSEDAR 11-piece swage and flare drill bit set is ideal for trade professionals and experienced DIY homeowners who need a durable, portable toolset for creating butt-expanded joints and 45° flares across common tubing sizes. If you require reliable fittings from a drill-powered setup, frequent on-site repairs, or a cost-efficient kit where individual parts are replaceable, this set delivers the coverage and construction to get the job done.