4-6-8-10-12 Gauge Flared Barrel Butt Splice Connectors Kit - 90PCS

In this review of the 90PCS Flared Barrel Butt Splice Connectors kit, the bottom line is simple: it is a practical, no-frills assortment for anyone who regularly works with stranded copper battery and power cables and needs reliable, high-conductivity connections. The kit is aimed at technicians, hobbyists and installers who prefer pure copper, non-insulated butt splices that can be either crimped for quick mechanical reliability or soldered for stronger, more conductive joints. For projects where sealed, moisture-resistant splices and a range of common AWG sizes are needed, this kit delivers consistent performance.

Key Features

• Complete assortment: The 90-piece set includes 26 of 12 AWG, 22 of 10 AWG, 18 of 8 AWG, 14 of 6 AWG and 10 of 4 AWG, giving a useful spread for many wiring jobs.
• Pure copper construction: Made from 99.9% purple copper (Cu-ETP/C11000) for excellent conductivity and efficient current flow across joints.
• Flared, chamfered barrels: Flared openings and chamfered ends make cable insertion easier and reduce the risk of strand splay during crimping or soldering.
• Closed, dimpled barrel design: The sealed, center-dimpled barrels help keep moisture out and reduce corrosion risk for longer-lasting connections.
• Longer seamless barrels: Thick, tubular barrels provide strong crimps and help prevent wire pullout when installed correctly.
• Dual join methods: Designed to be crimped for quick mechanical reliability or soldered for additional strength and conductivity.

Who It's For

This kit suits electricians, marine technicians, RV and automotive DIYers, and audio or welding cable installers who regularly work with flexibly stranded copper cables and need robust, low-resistance splice joints. The assortment of sizes covers common battery and heavy-gauge wiring tasks so users can keep spares on hand for repairs and installations.

Those who need insulated connectors, aluminum-compatible terminals, or pre-shrunk sealed connections should look elsewhere. Also, if a project strictly requires tinned or plated terminals for specific corrosion environments, consider connectors designed for that purpose rather than bare, non-insulated copper splices.

Pros & Cons

Pros

• High conductivity from 100% annealed electrolytic copper provides efficient current flow.
• Flared and longer seamless barrels make cable insertion and secure crimps more reliable.
• Closed, dimpled barrel helps seal out moisture and prevent corrosion at the joint.
• Useful assortment of 5 common AWG sizes covers many battery and power cable needs.

Cons

• Non-insulated design requires separate heat shrink or insulation for environmental protection.
• Not rated for aluminum conductors, so it is unsuitable for mixed-metal installations.

Specifications

Brand	SVAAR
Material	99.9% purple copper (Cu-ETP/C11000), annealed
Piece count	90 PCS (12 AWG x26, 10 AWG x22, 8 AWG x18, 6 AWG x14, 4 AWG x10)
Voltage rating	Rated for 600 Volts
Barrel type	Flared, closed-type seamless tubular barrel with center dimple
Compatibility	Solid or stranded copper wire; NOT for aluminum conductors

Our Verdict

For users who need a dependable set of non-insulated copper butt splices for battery, audio, welding or marine wiring, this 90-piece kit represents solid value. The pure copper, flared and sealed barrel design gives excellent conductivity and durable crimps when paired with proper crimping tools and heat-shrink insulation. It is not a substitute for insulated or aluminum-compatible terminals, but for copper wire installations it is an economical, reliable choice.

Frequently Asked Questions

Can these connectors be soldered as well as crimped?
Yes. The kit is designed for crimping for quick mechanical reliability and can be soldered for added strength and conductivity.

Are these connectors insulated or suitable for aluminum wire?
No. These are non-insulated pure copper connectors and are not rated for aluminum conductors; use copper wire and add heat-shrink tubing for insulation.

Do the barrels seal out moisture?
The closed-type, center-dimpled barrel design helps seal out moisture, but for best long-term protection use adhesive-lined heat-shrink tubing over the joint.