Irwin 27ZR 20R 9″ Vise-Grip Original Locking Chain Clamp

The IRWIN 20R is a classic locking chain clamp built to secure round, irregular, and awkward shapes that ordinary jaws can’t grab. A heat-treated alloy-steel body delivers strong locking force, while the wrap-around chain applies even pressure 360° around pipe, mufflers, housings, and non-parallel parts. Set the turn screw once for the required size and pressure—the clamp repeats that setting for consistent, fast setups on production or service work. The classic trigger release unlocks smoothly with one hand.

With an 18″ jaw/chain capacity and 9″ overall length, the 20R is compact enough for tight bays but large enough to tackle exhaust work, pipe fit-up, and fixture tasks. It’s a proven choice for welding and fabrication, automotive repair, and maintenance crews who need a clamp that locks solidly on shapes a C-clamp or straight-jaw plier won’t hold.

Irwin 20R 9″ Vise-Grip Original Locking Chain Clamp At a Glance

• 360° wrap-around hold: Chain locks evenly on round and irregular parts.
• Turn-screw adjustment: Set the pressure once; stays set for repeat jobs.
• Classic trigger release: Reliable one-hand unlock.
• Heat-treated alloy steel: Built for daily shop and field use.
• 18″ capacity, 9″ length: Big reach in a compact tool.
• Great for odd shapes: Pipes, mufflers, pumps, housings, and assemblies.
• Serviceable design: Replacement/extension chain available (IRWIN 40EXT, 18″).

Markets

• Welding & Fabrication Holds pipe and odd shapes for cutting, grinding, and tacking.
• Automotive & Exhaust Wraps and locks on mufflers, catalytic converters, and tubing.
• Construction & MRO Secures valves, handrails, and hardware during install or repair.
• Manufacturing Useful at assembly benches and fixtures for repeatable clamping.
• Municipal & Facility Maintenance One clamp covers many diameters and profiles.

Technicians choose a locking chain clamp when straight jaws slip or leave uneven pressure. The 20R solves that with a wrap-around chain that distributes force uniformly, so parts stay put while you cut or weld. The turn screw makes repeat setups quick on production runs, and the trigger release is simple with gloves on. In auto bays, fab shops, and field maintenance, the 20R’s capacity and compact length make it a versatile problem-solver that replaces several specialty clamps.

Irwin 27ZR 20R 9″ Vise-Grip Original Locking Chain Clamp Features

• High-grade, heat-treated alloy steel for toughness and long service life.
• Adjustable turn screw to dial in fit and clamping pressure.
• Classic Vise-Grip trigger release for controlled unlocking.
• All-around chain grip for round, square, or irregular profiles.

Irwin 27ZR 20R 9″ Vise-Grip Original Locking Chain Clamp Includes

• (1) IRWIN Vise-Grip 20R Locking Chain Clamp (Model 27ZR)

Irwin 27ZR 20R 9″ Vise-Grip Original Locking Chain Clamp Specifications

• Model / MFG Part #: 27ZR / 20R
• UPC: 038548000275
• Tool Length: 9″
• Jaw/Chain Capacity: 18″
• Weight: 1.79 lb
• Package Dimensions: 12.25″ × 4.44″ × 0.94″
• Type: Locking chain clamp

Irwin 27ZR 20R 9″ Vise-Grip Original Locking Chain Clamp Warranty

• Irwin’s Full Lifetime Guarantee Against Manufacturing Defects

Why Customers Choose the Irwin 20R 9″ Vise-Grip Original Locking Chain Clamp

Crews pick the 20R because a locking chain clamp applies even pressure around parts that standard pliers can’t hold—pipe, mufflers, odd castings, and non-parallel pieces. The turn screw keeps setups consistent, the trigger release is predictable with gloves, and the heat-treated steel body stands up to daily shop use. With an 18″ capacity in a 9″ tool, it’s a compact clamp that covers a wide range of real-world jobs, from exhaust work to welding fixtures.