Amazon.com : SEPEAK CE 22kN Large Alumn Auto Twist Locking Ladder Hook Carabiner, Professional Heavy Duty Lightweight Clip for Outdoor Tower Climbing, Aerial Work, Rescue, Fall Protection D Ring, Huge Opening Gate :
Great Choice Products Carabiner Clip 12Kn Aluminium Wiregate Lightweight Heavy Duty Large Strong
The lightest carabiner (and quickdraw): Edelrid 19G
4pcs Heavy Duty Lightweight Small Screwgate Locking Carabiner Clip, Personalized Carabiner, 77mmx62mm Strong D Shaped Aluminum Carabine - Etsy
Carabiner Phantom (various colors)
Arborist Gear and Supplies PETZL OK Lightweight oval carabiner from Goldenwest Lawnmowers
Climbing Carabiner Clip, Durable D Shaped, Aluminum Alloy Lightweight Carabiners Green Screw Lock - Walmart.com