Breeze Buckles are ultralight titanium cinch buckles that come in at 16.8 grams grams per pair (0.59 Ounce)!
These are very easy to use and adjust. Combine these with my ultralight 4 gram per foot blue polyester webbing and you have an extremely lightweight cinch buckle system.
These are sold as a pair. You get two buckles.
Disclaimer: Breeze Buckles are designed around the two polyester webbings that I make my tree straps out of. They have been tested on a few other brands of webbings as well and while they are generally compatible with most 1 inch webbings on the market some other brands of tree straps are thicker than the webbings I sell and may not adjust as effortlessly as when they are used with Autumn Ultralight tree straps.