https://catalog.tsubaki.ca/item/roller-conveyor-chains_/roller-conveyor-chains---81x-chain/81xhd-premium-1
Item # 81XHD Premium, Roller Conveyor Chains - 81X Chain On Tsubaki of Canada Limited
Tsubaki Canada's 81X roller conveyor chain delivers strength and wear resistance for lumber, packaging, and material flow systems.