Elevate your drilling operations with our Cross-Over Sub, tailored for versatility and strength. Adapt from your 4" FH box with a pin made to the connection of your choice, up to 5-1/2" FH. Choose Box or Pin and optional Wrench-Flats to suit your specific needs. Boasting a robust 4145 HT Steel construction, this sub features a 2.25" ID bore and an overall length of 16", ensuring reliable performance in demanding environments. At Hot Drilling Products, we prioritize quality and precision, ensuring our tools help you achieve optimal results.