This is a 150 mm reverse-action circlip plier designed for installing and removing retaining rings (circlips) in confined or awkward locations where conventional pliers are difficult to operate. The tool’s reverse-action mechanism causes the working tips to move in the opposite direction to standard circlip pliers when the handles are squeezed, giving finer control of ring expansion/contraction and reducing the risk of sudden release in tight assemblies.

The plier is manufactured from martensitic stainless steel (AISI 420 class) for a combination of strength and corrosion resistance, with a satin/chrome finish on the working surfaces to resist rust and ease cleaning. The head is a straight (ST) tip profile, 150 mm overall length, machined to accurate tolerances to engage circlip holes securely. The tool is intended for use with circlips manufactured to DIN 471 / DIN 472 standards and is compatible with commonly specified retaining rings in engineering and maintenance work.

Typical applications include automotive hub and transmission work, small-engine repair, general mechanical maintenance, electrical motor servicing and precision assembly where space is restricted. Industries that commonly use this style of plier are automotive and transport maintenance, light engineering, HVAC, agricultural machinery servicing and aftermarket garage workshops.

Key benefits of the reverse-action stainless design are improved corrosion resistance in humid or outdoor environments, good tensile performance and tip hardness from heat treatment that preserves tip profile under repeated use. The reverse-action control reduces hand fatigue when holding a circlip in an expanded or compressed position and improves safety by lowering the chance of the ring springing free unexpectedly. The straight tip head provides straightforward alignment with circlip locating holes and is compatible with a wide range of ring sizes conforming to DIN standards.

Duchy Fasteners stocks this reverse circlip plier in 150 mm length, supplied individually. We also carry related pliers in alternative tip profiles and lengths and accessory tips and packs to suit different circlip diameters and application requirements.