Haisstronica AWG 22-10 Ratchet Crimping Tool Review: The Best-Selling Crimper for Heat Shrink Terminals

Overview

The Haisstronica AWG 22-10 Ratchet Crimping Tool is the brand's #1 best seller. It is a dedicated crimper for heat shrink insulated terminals, the waterproof, adhesive-lined connectors commonly used for automotive, marine, trailer and appliance wiring.

This review is based on Haisstronica's official product information as of October 2026. We focus on what the tool is designed to do, what it works with and who it suits.

How it works

Full-cycle ratchet

The defining feature is the full-cycle ratchet: once you start squeezing, the jaws won't open until the crimp is complete. That helps you apply consistent, repeatable pressure on every connection, the main advantage of ratcheting crimpers over simple non-ratcheting ones. A release lever lets you open the jaws mid-cycle if you need to reposition a terminal.

Color-coded crimp positions

The jaws have marked, color-coded positions that correspond to the standard terminal colors (red, blue and yellow for increasing wire sizes). You match the terminal color to the jaw position, insert, and crimp.

Pressure adjustment

An adjustment on the ratchet lets you fine-tune crimp pressure for different terminal brands or a tighter or looser crimp.

What it works with

The tool is designed for heat shrink insulated terminals in the AWG 22-10 range, including the butt, ring, fork, spade and bullet terminals found in Haisstronica's Heat Shrink Wire Connectors Kit. Haisstronica's own product pages recommend this crimper for that kit.

It is not designed for non-insulated or open-barrel terminals, which need a different crimp shape. If your projects use those, look at Haisstronica's dedicated crimpers or a tool kit with multiple crimpers.

Check the gauge range: Haisstronica lists this crimper as AWG 22-10, but the tool shown in the product photo has a jaw marked 26-10 AWG with an extra 26-24 position. If you need to crimp very thin wire, confirm the current version with Haisstronica before ordering.

How to make a good heat shrink crimp

1. Strip the wire to the length of the terminal barrel.
2. Match the terminal color to the marked jaw position.
3. Crimp with a full squeeze until the ratchet releases.
4. Tug-test the connection.
5. Heat the terminal evenly with a heat gun until the tubing shrinks and the adhesive seals.

Who should buy it?

A great fit if you:

• Mainly use heat shrink connectors for car, boat, RV or trailer wiring.
• Want the consistency of a ratcheting crimper.
• Already own (or plan to buy) a heat shrink connector kit.

Look elsewhere if you:

• Need one tool for non-insulated or open-barrel terminals too. A multi-crimper tool kit may be a better buy.
• Want interchangeable dies for many terminal types.

Price and buying from Haisstronica

At $30.99 (down from $33.99 at the time of writing), it is an affordable entry to ratcheting crimpers. Haisstronica offers free standard U.S. shipping and 30-day returns for unused items; for non-defective returns you pay return shipping and a restocking fee of up to 10% may apply. See our full Haisstronica review.

The bottom line

If most of your wiring uses heat shrink terminals, the Haisstronica AWG 22-10 Ratchet Crimping Tool is a sensible, low-cost tool: a full-cycle ratchet, color-coded jaws and adjustable pressure for about $31. Just remember it is a specialist tool for insulated heat shrink terminals, not an all-in-one crimper.