If you're expecting a real rivet forget it π It's not rounded as it should be completely flat, it just will push pop the other side back out don't even waste your money or time thinking i have one done wrong. All kits had no headpin and all tools bent so easily with another headpin from a $90 set from a bike mechanism and the crank was fine but the assembly just bent too much for the pin and the one pressed against the chain , should I I just went and bought another full set of bike gear for $90 πππ Waste of time waiting and trying them all, like what?!? I figured at least one would work