Knipex 88 01 400 Tongue Groove Pliers 3.5in V-jaw

Product Description

The KNIPEX 88 01 400 is a heavy-duty tongue and groove plier built for professional trade use across plumbing, HVAC, electrical, and mechanical applications. The self-gripping V-jaw automatically adjusts to the workpiece and locks without slipping, reducing hand fatigue during repetitive fastening and loosening tasks. The box joint provides stable, precise action across all 11 positions, and the chrome vanadium steel body handles high torque without deforming. At 16 inches in overall length and 2.701 pounds, this is a full-size tool suited for professionals working on pipe fittings, conduit, fasteners, and large nuts where a standard plier lacks the reach and jaw capacity.

This plier is designed for trade professionals including licensed plumbers, pipefitters, HVAC technicians, and electricians who regularly work with large-diameter fittings and hardware. The 3.5-inch cutting capacity and 11-position box joint make it well suited for residential and light commercial service work, rough-in plumbing, and HVAC installation where a fast-adjusting, high-grip plier is needed on varied fastener sizes. The plastic handle provides insulation from incidental contact and reduces hand strain during extended use.

Key Features

• Self-gripping V-jaw automatically conforms to workpiece and holds without manual adjustment
• 11-position box joint allows precise jaw gap selection across a wide range of fastener sizes
• Chrome vanadium steel construction rated for heavy-duty use
• 3.5-inch jaw capacity handles large pipe fittings, conduit connectors, and hex fasteners
• Quick-adjusting mechanism speeds up positioning between tasks
• Conforms to DIN ISO 8976 standard for jaw pliers

Compatibility

Designed as a general-purpose heavy-duty tongue and groove plier suited for plumbing, HVAC, and electrical trade applications where a 3.5-inch jaw capacity and 11-position adjustment range are required.

Installation Notes

Tongue and groove pliers are installed by licensed plumbers, pipefitters, HVAC technicians, and electricians depending on the application. Always de-energize circuits or shut off fluid systems before using any hand tool on live components. Inspect the jaw and joint for wear before use on high-torque fasteners. Do not use as a substitute for a pipe wrench on threaded pipe where marring or deformation is a concern.