ThinkBamboo 8" Round Wine Cork Trivet Frame Cage, Natural Finish - Set of two This is a pair of round bamboo trays for making wine cork trivets. Natural finish. Each tray measures approx 8" across, and holds about 70 wine corks. A wine cork trivet will protect tables and counters from hot pots and pans. Half the fun is in the making, you supply the corks.