It is a hometown fight for Henshaw, the reigning champion who sports a 13-1-1 record with seven knockouts. King, 39, will come into the fight with a 10-1-1 record, undefeated in his last nine bouts with five knockouts.
The fight presents a major opportunity for King as a victory would put him in contention for an upcoming world title fight.
"I'm really excited because there is a chance I will get to fight for a world title if I win this one," King said. "To me at my age, it adds a little pressure because I want to make sure it's not the end of my career."
However, this is a major step up in competition and Hanshaw has a major advantage in reach as a lanky 6-foot-3 fighter and is 13 years younger than King. Still, King feels confident going into the fight.
"Honestly, I deal with the youth all the time. I know I can keep up," King said. "As far as his advantage of being taller, I have a cruiserweight in Robert Hall Jr., who is the same height and I've been working with him to get around his jab."
His trainer, Scott Vance, is well aware of Hanshaw, having some of his kids fight Hanshaw in the amateur ranks. Vance believes he knows the keys to King winning the fight, which obviously includes taking the fight to Hanshaw and not letting up.
"He's a good fighter who uses his reach with those long arms. Roy is going to have to start breaking him down in the first round, going to the body and then coming to the head," Vance said. "He's got to be aggressive and stay right on him for the whole fight. If Roy does that, I think in about 6-8 rounds, he can get him."