Each sampler kit includes : 1x R4 1x1 blank keycaps in each color (11 total), 5 of each sound dampening O-ring (15 total), and 1 of each Cherry MX switch type (4 total). We also offer laser etching and/or engraving on your sample keys for an additional fee. Sampler kits are available without the Cherry MX switches at a lower price.