Wera 05020101001 Spanner 16-19x5/8-3/4in

The Wera 05020101001 is the Joker 6004 Self-Setting Spanner (L size).

It is part of Wera’s Joker 6004 automatic adjustable wrench range, designed to grip hex nuts and bolts quickly without manual adjustment.

What it is

This is the large-size version (L) of the self-adjusting Joker spanner. It automatically grips fasteners in the range of approximately 16–19 mm, making it suitable for common medium metric bolt sizes used in mechanical, electrical, and installation work.

The jaw mechanism adjusts itself when placed on the fastener, then locks securely for ratcheting-style operation.

Key features

• Self-setting jaw system (auto-adjusts to nut/bolt size)
• Size range: 16–19 mm hex fasteners
• Ratcheting function for fast tightening/loosening without repositioning
• 30° return angle for use in tight spaces
• Anti-slip gripping jaws to reduce rounding of fasteners
• Compact ergonomic design (~224 mm length)
• Made from high-strength chrome-molybdenum steel