Wera Joker XS/S Self-Setting Double Open-End Spanner 7–13 mm / 1/4–1/2 AF, 130 

Overview

The Wera Joker XS/S Self‑Setting Double Open‑End Spanner combines the convenience of a ratchet with the precision of a spanner. Its self‑setting mechanism automatically grips and clamps fasteners, speeding up assembly and disassembly while protecting bolt heads and nuts from damage.

Mechanism

Continuous parallel jaws adjust continuously across the full size range, and a lever clamps the fastener securely to prevent slipping or rounding. This provides a confident, solid grip for every turn.

Ratchet Action

A built‑in ratcheting mechanism allows rapid work without repositioning the tool after each movement. The compact 30° return angle is engineered for confined spaces, giving you leverage where larger tools cannot reach.

Range and Build

The spanner covers metric sizes from 7 mm to 13 mm and Imperial (AF) sizes from 1/4 inch to 1/2 inch, offering broad compatibility. Its robust construction ensures long‑lasting durability, and the ergonomic design provides comfort during extended use.

Key Specifications

• Type: Self‑setting double open‑end spanner
• Range (Metric): 7–13 mm
• Range (Imperial/AF): 1/4–1/2 inch
• Action: Ratcheting mechanism
• Return Angle: 30°
• Special Feature: Continuous parallel jaws with automatic grip and clamp
• Dimensions: 155 mm (Length) × 55 mm (Width) × 13 mm (Height)
• Weight: 130 g
• Packaging: Sold individually