We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Red Klein Tools ferrule crimper kit 6.9 x 2.7 inches square ratchet

Klein Tools S-YXQ-21 Ferrule Crimping Tool 23-7 AWG Square Ratchet Kit

SKU CH-2MPE-8NXA4

Crimps 23-7 AWG ferrules with four high carbon steel dies and a self-adjusting ratchet

  • Size/Dimensions6
  • Color/FinishRed
  • Selling UnitKit
  • CapacityRed
  • Number of Pins25
  • Max Capacity Mild Steel10
  • Covers 23 to 7 AWG ferrule terminals in one tool
  • Four high carbon steel dies grip every angle for tight connections
  • Self-adjusting ratchet locks until a full crimp cycle completes
  • Ergonomic non-slip TPE handles reduce fatigue during extended use
  • Suits automotive wiring, car audio, electrical repairs and speaker projects

Professional Ferrule Crimping Kit

The Klein Tools S-YXQ-21 kit handles ferrule terminals from 23 to 7 AWG (0.25 to 10 mm²). It is built for electricians, automotive technicians and serious DIYers who need reliable wire terminations across that range. The self-adjusting ratchet mechanism reduces hand effort during repetitive crimping tasks.

Square Four-Die Crimp Profile

Four high-carbon steel dies compress the ferrule from every angle to create a square crimp that locks wires firmly in place. An adjustable compression wheel lets you fine-tune crimp depth for each terminal size. The ratchet only releases after a full cycle, preventing partial crimps.

Compact Hand-Tool Installation

At 6.9 by 2.7 inches and 11.6 ounces, the tool fits easily in a tool belt or glove compartment. Cushioned non-slip TPE grips stay secure with sweaty or greasy hands. Common errors include selecting the wrong die nest for the wire gauge and not completing the full ratchet stroke before release.

Highlights

  • Covers 23 to 7 AWG ferrule terminals in one tool
  • Four high carbon steel dies grip every angle for tight connections
  • Self-adjusting ratchet locks until a full crimp cycle completes
  • Ergonomic non-slip TPE handles reduce fatigue during extended use
  • Suits automotive wiring, car audio, electrical repairs and speaker projects

Specifications

BrandKlein Tools
ModelHand Rivet Nut Setter Kit
Size/Dimensions6
Color/FinishRed
Selling UnitKit
CapacityRed
Number of Pins25
Max Capacity Mild Steel10
Parts1 Year
Labor1 Year
Part NumberS-YXQ-21

Questions about this item

What does the 23-7 AWG crimp range mean when I am on the job?

It covers ferrule terminals from 0.25 to 10 mm² so you can handle the most common wire sizes without changing tools.

How does the self-adjusting ratchet control the crimp force?

The mechanism automatically matches pressure to the terminal size and only releases after a full cycle for even, repeatable crimps.

What physical space does the 6.9 by 2.7 inch frame need in my tool bag?

The compact profile fits easily in a standard pouch or belt pocket and weighs 11.6 ounces for all-day carry.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.