KickPort TRG-WH T-Ring, white Bass drum hole reinforcement ring, 5", self-adhesive

KickPort TRG-CL T-Ring, clear bass drum hole reinforcement ring, 5", self-adhesive

KickPort CP1-BL Cajon Sub-Booster, black

KickPort TRG-MB T-Ring, matt black Bass drum hole reinforcement ring, 5", self-adhesive