Chain for AMW SG; AMW 10 SG; AMW 10 HST; AMW 10 HRS Jigsaw is designed for use with the. As a genuine manufacturer’s replacement product, this chain is as good as the original your machine was supplied with, and should provide hours work for you.A generic non-branded product may stretch, or might not even fit your product correctly, so we would always recommend opting for a genuine replacement