those will work also. look for any type that uses a seperate bolt to attach the wheels to the spacer and the spacer to the hub. the ones that share a common shaft are the ones which will break your wheel studs/hubs
yeah i just bought the stud spacers i knew they wouldnt be for jumping but im not gonna do much jumping im more into hill climbing but if i was to break them i would go for the ones that attach to the hub itself.depends on riding ur gonna do