Under the same mechanical resistance conditions, this chains enables the use of a lower section:a) 8-mm OSC-G7 instead of 10-mm standard;b) 10-mm OSC-G7 instead of 12-mm standard.This allows for a 40/60% saving in weight or, weight being equal, a 40 to 60% longer chain.The tangles of chain are delivered in wooden boxes or convenient packages easy to handle and stock. Each single metre of chain has an OSC-G7 distinctive mark to ensure quality.