Rosmall 3 Ton Oblong Master Link Heavy Duty Lifting Ring 5/8'' Lashing Ring, 6600 lbs, Grade 80 Hoist for Weldless: Amazon.com: Industrial & Scientific
Central lifting ring - Lifteurop | CODIPRO distributor
Lifting Links & Rigging Rings
Outboard Lifting Ring Tool For Mercury/Marine/Force/Yamaha Engines 50HP | eBay
Forged Round Master Link Lifting Ring for Marine Hardware with 97% off - China Master Link, Rigging Link | Made-in-China.com