Ready to do battle against the biggest pigs in the lake, the Hog Farmer HD Underspin is built with heavy-duty components that provide more power and stack the odds in your favor. The Hog Farmer HD Underspin features a premium willow leaf blade that is attached by a heavy duty cylindrical ball bearing swivel shaft that rotates 360-degrees, and a dual rotational ball bearing swivel with 20lb test split rings to ensure the strongest and smoothest action.