Enhance your drilling operations with the Cross-Over Sub, 4-1/2" IF Box from HotDrillingProducts. Crafted from 4145 HT Steel for unmatched durability, this sub adapts your 4-1/2" IF pin with a box tailored to the connection of your choice, extending up to 5-1/2" FH. Enjoy the flexibility of choosing between Box or Pin options, along with optional wrench flats for ease of use. With an overall length of 16" and a 2.25" ID bore, this reliable tool ensures seamless integration into your drilling setup.