Unior 1644/4 Chain Wear Indicator

The Unior 1644/4 chain wear indicator is a go/no-go gauge that tells you whether the chain needs replacing. It is designed for anyone checking and maintaining their own bike.

• Go/no-go gauge: see straight away whether the chain needs replacing
• Measures wear across 10 chain links
• Precision laser-cut steel
• Suitable for chains with a 1/2" pitch
• Lightweight and compact: 40 g and 122.5 mm long

Technical specifications

• Material: Precision laser-cut steel
• Overall length: 122.5 mm
• Weight: 40 g
• Specified chain pitch: 1/2"
• Intended use: Measures chain wear across 10 links (go/no-go gauge)
• Package contents: 1 piece

Unior was founded in 1919 in Zreče, in present-day Slovenia, where it is still based. For bicycle care, it makes tools, repair stands and wheel equipment. Its name, adopted in the 1970s, comes from the expression “universal tools” and reflects its roots in metalworking.