The F-32 handle collection is the most diverse tumbler handle offering on the market (By size choices and # of colors). The 30 oz. F-32 handle fits perfectly various branded 30oz. tumblers including, but not limited to YETI tumbler Rambler, RTIC *** NOTE*** DOES NOT FIT THE NEWLY RELEASED 30 oz RTIC TUMBLER (08.2017, modified shape), FITS ANY 30 oz RTIC THAT HAS AN “RTIC” LOGO ON THE TUMBLER (previous shape) AND NOT THE NEW “BEAR” LOGO. Fits as well OZARK (Walmart brand), BEAST, SIC Cup, Reduce (Costco brand), Grid Gear, Haute, Eskimo, Thermik, Magnum Steel, Kodiak, Boss, Polar Drifter, Gus, Engel, Titan, Polar Pad, Smart, Iconiq, Epic, Bison, K2, Zero, Kryo Kup, Iceberg, Frosti and many more 30 oz. tumblers! Fits as well in most car cup holders and camping chairs. NOTE : the 30oz. size F-32 handle does NOT fit 20oz. size Tumblers, please click on the 20Oz size button at the top of this page for our 20 oz size F-32 handle collection offering.