Wera Tools 05020175001 7870 Joker S Self-Setting Insert Spanner 10-13mm

The Wera 7870 Joker S Self-Setting Insert Spanner is an innovative adjustable wrench insert designed for use with the Wera Joker modular system. This insert automatically adjusts to fit fasteners ranging from 10mm to 13mm, eliminating the need to manually set the jaw width.

Key Features:

• Self-setting jaw mechanism automatically grips hex fasteners from 10mm to 13mm
• Fits Wera Joker 9x12mm modular handles for customizable tool configurations
• Parallel jaw design prevents fastener rounding and provides optimal force transmission
• Precision chrome-plated finish for corrosion resistance and durability
• Compact insert design allows access to confined spaces
• Return angle of only 30 degrees enables working in tight quarters

The Joker S modular system allows technicians to interchange various tool heads with a single handle, reducing tool inventory while maintaining professional performance. The self-setting mechanism saves time by eliminating manual adjustment between different fastener sizes.