It is a rubber pin badge of the rhythm machine system. Cute pin badge with dot pattern design. The three-dimensional feeling peculiar to rubber is a nice feeling. This is a set of 4 types. It's a great set for the direction you're wondering which type to get! Normally, the price is for 3 pieces, so 1 piece is free and it is a good deal. As an accessory to bags and bowls. It may also be ♪ a good gift for synth lovers < Rhythm Machine Rubber Pin Badge Assortment Set of 4 > Contents 1 rubber pin badge each 01：Analog RhythmMachine 808 02：PCM-Analog RhythmMachine 909 03：Bass SYNTHESIZER 303 04：PCM RhythmMachine　　 < Rhythm Machine Rubber Pin Badge Specification> Body: PVC, Steel Body size: Approx. 41×23×16mm * The cross-section may be distorted during the rubber cutting process. Please note that this is a characteristic of the material.