This is a homemade repair part for the hi-hat pedal of the Roland TD series electronic drum sets. If the pedal doesn't respond when stepped on, or only responds when stepped on hard, the internal rubber part shaped as shown in the photo may be deteriorated or hardened. While there are methods circulating online to soak the rubber part in hot water, it will harden again after a while. Depending on the degree of deterioration, it may even melt in hot water (mine melted, lol). This product is a self-made repair part created with a high-precision 3D printer. Using a soft material (TPU) also used in smartphone soft cases, you can maintain the function maintenance-free for a long time just by replacing the deteriorated part (I have been using it on my own equipment for several years without any problems). Since it is made with a high-precision 3D printer, it can be replaced directly (due to the manufacturing process, some sides may be slightly rough, but this does not affect the operation at all). Replacement is not difficult (you can find the procedure by searching online). For HD series, replacement may be more difficult than for FD series, but it is possible. We cannot offer discounts. This is not a genuine product, so please use it at your own risk and within the scope of personal use. If you expect the same operational guarantee, please purchase the genuine product. Please be responsible for any damage caused by replacement, and the replacement work is at your own risk. Operation has been confirmed on FD series 6, 7, 8, HD series 1 (kick & hi-hat), and TD series 1. Other models are unconfirmed, but it is believed that it can be installed on devices that use parts of the same shape. Everything in the photo is included (the equipment itself is not included). The price includes shipping per piece. It will be shipped via Nekopos. Accessories/Parts...Maintenance supplies Type...Electronic drum