Product Overview

The IRWIN VISE-GRIP 9-Inch Welding Clamp (25ZR) is a heavy-duty locking plier designed to hold metal pieces together during welding, grinding, or fabrication work. With deep throat jaws and a wide jaw opening, it applies even pressure to keep parts aligned and stable while you work.

This clamp is built with IRWIN’s signature VISE-GRIP technology for quick locking and release, giving you strong holding power with just one hand. The turn-screw adjustment lets you fine-tune the jaw tension and clamping pressure depending on the material and task. Once locked, it stays put—helping prevent movement during tack welding or finishing passes.

Made from heat-treated alloy steel, the 25ZR is durable enough for shop use and fieldwork alike. Whether you're working on automotive panels, angle iron, or sheet metal frames, this tool keeps things in place when precision and stability matter most.

Technical Specs

• Brand: IRWIN
• Model Number: 25ZR
• Tool Type: Locking welding clamp
• Length: 9 inches
• Jaw Style: U-shaped deep throat welding clamp
• Material: Heat-treated alloy steel
• Adjustment: Turn-screw for pressure control
• Release Mechanism: Classic trigger release
• Use Case: Welding, fabrication, clamping sheet metal, positioning workpieces

What It’s Good For

This clamp is great for tack welding, holding sheet metal in place, fabricating box frames, or aligning metal joints during layout. It’s especially helpful when working solo, allowing you to position and hold work securely without a second pair of hands.

Compared to Other Clamps

Compared to C-clamps or bar clamps, the IRWIN 25ZR provides quicker locking and release with consistent pressure across the jaws. It’s more versatile than fixed clamps, with a jaw opening and shape that adapts to a variety of welding and fabrication tasks.

Also Known As

• IRWIN 25ZR VISE-GRIP Welding Clamp
• IRWIN 9 in. Locking Welding Pliers
• IRWIN Sheet Metal Clamp
• VISE-GRIP Welding Locking Pliers 25ZR

Model Number: 25ZR