Do Nashville Bridges have mounting studs that go into the body?

I ordered a cheap Musiclily bridge. It came with two long screws with the flywheels already attached, precisely as the picture shows. The bridge is nice, but pretty tiny. But I was expecting there'd be studs I'd have to drill for. I expected that the screws would screw INTO two female studs that I'd have to sink into the guitar. But there's a bridge, two screws and two fly wheels. Am I missing studs or do I drill two screw-sized holes in the wood and shove them in? That seems weird. It says "package includes: 1 piece full bridge assembly set and mounting accessories" but I feel like it's missing two mounting accessories. Am I an idiot?