Pro Chain Wear Indicator

Tools with verified quality
Unior Hand tools are in compliance with the European and global quality standards. Unior is striving to assure the high quality of hand tools also as a fully authorized CEO (European Tools Committee) member.
Unior was among the first manufacturers of hand tools in Europe to receive ISO 9001 quality certificate. In 1994, the company received ISO 9001 quality certificate for the development, production and marketing of hand tools, sheet metal housing for hand tools and mechanical processing of forging parts.
Unior tools are in compliance with DIN standard. Since 1991, the tools for working at high voltage also proudly hold VDE certificate, issued by VDE Institute- "Pruf und Zertifizierungsinstitut" from Offenbach in Germany.

Pro Chain Wear Indicator
To alleviate poor shifting and uneven drive train wear, most manufacturers recommend chain  replacement at or before 0,6% stretch. Now you can quickly and accurately determine the wear  and stretch of any chain. Simply insert the chain checker`s pins into two links, press the swing  arm gauge tight, and then check the gauge window for an accurate reading.