Chain link with folded over connecting portions

A chain having a longitudinal axis and comprising at least two articulated links, each link comprising:

• a first planar portion having a longitudinal axis colinear with the longitudinal axis of the chain;
• a second portion integral with and disposed longitudinally of and adjacent the first planar portion, the second portion being folded over to form a bight having a pair of parallel laterally-spaced opposed walls, the walls defining a space therebetween;
• and
• a transition portion disposed between the first and second portions, the transition portion transversely offsetting the second portion with respect to the first portion;
• the first planar portion of one of the two links being received within the second folded-over portion of the other of the two links, whereby the longitudinal axis of the first portion of the one link bisects the space between the walls of the second portion of the other link,
• the first portion of at least the one link including a cutting tooth,
• the bight immediately preceding the cutting tooth on the one link and defining a depth gauge for said cutting tooth;
• and
• pivot means interconnecting the first portion of the one link and the second portion of the other link to permit articulation therebetween.