The Hub City USA 1 3/8" Female PTO Round Shaft Adapter is a high-quality and durable component designed for tractors. Made in the United States by the reputable brand Hub City, this adapter allows for easy conversion of 1 3/8" female PTO round shafts to 1-1/8" 6 spline male connections. This versatile adapter is compatible with various equipment makes and models, making it a valuable addition to any heavy equipment parts and accessories collection.