Grade 2 Studless Anchor Chain 1) Structure:Roller Chain 2) Function:Transmission Chain 3) Biggest Size:122mm Grade 2 Studless Link Anchor Chain1) Structure:Roller Chain 2) Function:Transmission Chain 3) Size: 19mm-122mm4) Popular size: 20, 24, 28, 30, 32, 34, 36, 40mm5) Certificate: ABS, DNV, BV, KR, LLOYDS, CCS etc. Grade 2 Studless Anchor Chain