CS Osborne No. K230-24 An easy to use hand snap set. Snaps are nickel plated brass. Set comes with 25 complete standard 5/8" size 24 snaps, flaring tool and two dies (concave and stud). An easy to use hand snap set. Snaps are nickel plated brass. Kit includes 25 complete snaps, flaring tool, two dies (concave and stud) a bracket and instructions.