Nike has been out of the golf hard-goods game for eight-plus years, but that hasn’t stopped some of the biggest names in the sport from keeping the Swoosh relevant at the highest level of professional golf.

Brooks Koepka and Tony Finau continue to carry a Nike Vapor Fly Pro 3-iron that’s developed a cult following amongst gearheads. The hollow-bodied club isn’t all that different from many of today’s players-distance model, which is probably why there’s some staying power. Vapor Fly Pro is familiar and still packs a punch from over 230 yards.

A few years back, I asked Finau how he was handling the possibility of the face caving in on his 3-iron. The hollow cavity puts additional stress on the face, increasing the likelihood of caving at some point.

“The one I’m using is actually one of my two backups,” Finau told me. “My original lasted me about six years. So with my math, if this one lasts me six years, and my other backup lasts me another six years, I’ll be about 50 years old by the time I’m done using both. It’s a great club. It’s one I’ve had in the bag since 2015, and I don’t think it’s going anywhere anytime soon. I hit it great.”

There’s a man with a realistic plan.

Koepka, on the other hand, doesn’t subscribe to the Scout motto: Always be prepared. During a recent content shoot with Koepka in Florida, Golf Digest Play editor Luke Kerr-Dineen caught a glimpse of the well-worn 3-iron, which led to a fascinating coveration. (Fascinating if you’re a gearhead.)

Koepka has been playing a Vapor Fly Pro 3-iron since 2016, but like Finau, there was always an assumption he’d replaced the original with a backup along the way. But you know what happens when you assume.

As Koepka revelead, he’s still playing the original that’s somehow managed to survive a myriad of blows at high speeds. Asked if he had a backup plan when the club face failed, Koepka offered a blunt response: “Don’t know and I honestly don’t care.” Fair enough!

If there’s one thing that separates Koepka’s 3-iron from nearly every club on tour, it’s the wear marks on the Fujikura Pro 95 Tour Spec shaft. Two thumbprint-sized divots have formed after nearly a decade of the shaft rubbing against the bag, something I’m not sure I’ve ever seen while covering the pro game.

The two wear marks are visible when Koepka addresses the club, but they aren’t enough of an eyesore to warrant replacing the shaft. If you’re keeping track at home, Koepka won’t test new heads and refuses to replace the shaft. The club has played a role in all five of Koepka’s major wins, so it’s easy to see why he doesn’t want to mess with a good thing.

“Once I get equipment that I like and I stick with it — I’m not a tinker,” Koepka told me a few years ago. “I don’t change. I keep it just how it is.”

Even if Koepka doesn’t have a backup plan, Ben Giunta, a former Nike Tour rep who owns and operates The Tour Van at LIV Golf events held in the United States, confirmed he has a backup head and shafts waiting for Koepka when the 3-iron finally bites the dust.

There’s a backup plan in place, even if Koepka doesn’t realize it quite yet.

This article was originally published on golfdigest.com