The original Frabill Pro-Thermal Tip-Up is still the best. With its unique, round, and insulated design, this tip up seals the hole and prevents snow and slush buildup while preventing freeze up to ensure smooth performance. It even keeps out light that can spook wary fish. Greased with Sub-Zero(TM) lubricant, the Frabill(R) Pro-Thermal Tip-Up provides anglers with incredibly smooth action on the ice. FEATURES: Round, insulated base prevents freeze up even at 25degF below Seals hole to keep out slush and block sunlight that can spook fish Shaft in shaft design makes it easy to lubricate as needed Covers up to 10 in. wide hole Fits in a 5-6 gallon bucket Lubricated with Sub-Zero(TM) lubricant for excellent cold weather performance Dual trip settings Removable spool shaft Model: 1660 Click here for additional information relating to the Manufacturer's Warranty.