This video was one of many produced in the 1980s by a company called Bullet. They were a staple of gay porn theaters back in the day. Bullet clips featured primarily "the real man" look -- muscular blokes who built up their bodies with hard labor, not at the gym.
That genre seems to have faded in the porn world. You can see lots of big ripped lads on screen -- and I'm certainly not complaining -- but they're mostly all gym built. You don't much see men who could be real construction workers or utility linemen, the kind of blokes who are very well put together because of hard work and have no need for a gym.