---
publication_id: "OT-2026-000000909"
title: "Adjustable opening pliers"
published_at: "2026-09-15T19:03:34.588795Z"
canonical_url: "https://opentechnical.org/p/OT-2026-000000909"
categories:
  - "tools-tooling/clamping-tools"
keywords:
  - "b25b7/10"
  - "b25b7/10"
  - "b25b7/10"
---

# Adjustable opening pliers

## Abstract

The adjustable opening pliers comprises a passive male shank and an active female shank each with a handle an intermediate section and a jaw The male shank has a longitudinal slot with teeth on its lower edge. The female shank has a transverse channel for partial insertion of the male shank and a through side bore. The adjustment mechanism includes a ratchet, attachable with the teeth, and a shaft coupled in the side bore, configured to interact with the ratchet. When the female shank is rotated, the shaft stem rotates the ratchet, disengaging it from the teeth, which allows the relative position between the male shank and the female shank to be adjusted in a precise and controlled manner. In an alternative embodiment, the female shank comprises a movable jaw guided along the male shank by a guide, so that the jaws remain substantially parallel during adjustment and use.