Omega Pacific, Large Locking Steel D Carabiner — PointWright
Amazon.com : Omega Pacific Caesar Aluminum Keylock Screw-Lok Carabiner - at 38 kN, it's Wicked-Strong and Represents The Strongest and Most Durable Design in Life Safety Equipment : Sports & Outdoors
Omega Pacific XL 1/2" Steel D Keylock Screw-Lok - Rock-N-Rescue