A set of all four Drops® (4 pcs total), one of each weight: 40g / 60g / 120g / 200g. This is the ideal starting place to provide options across the drum kit. Try using the smaller weights (40g / 60g) on rack toms 8"-12". Try the larger weights (120g / 200g) on floor toms 13"-18". For snare drums, all weights provide great options. Tip: try doubling up heavier weights on floor toms, and doubling up lighter weights on the snare.