This is an extension switch designed for use with the LINE6 HX STOMP. It's recommended for those who find the three switches on the main unit insufficient and are considering upgrading to the HX STOMP XL. It's an "easily detachable type" that can be easily attached and detached from the HX STOMP. It consists of two parts: the "extension switch body" and the "base plate," each embedded with strong neodymium magnets. Easy attachment and detachment are possible by sliding the base plate along the groove from the right side. It can be stored and carried without worrying about the height of the effects board or instrument case pocket. * The base plate will be shipped attached to the main unit. * Although strength has been confirmed, please be aware that the groove may be damaged if stepped on extremely hard or subjected to impact. The default printing content is "no printing." If you would like "45" or "↓↑" printed, please let us know in the comments. The printing is done by changing the material of the housing itself, so it will not peel or fade. If you would like a TRS jack type, please let us know in the comments (+¥500). This cable is not included, so please prepare a 6.3mm standard stereo cable for use. With the TRS jack type, the extension switch may slightly rub against the HX STOMP's Volume knob. When attaching, align it to the lower right position. Shipping will be via Yu-Packet Post. The housing is made with a 3D printer, so there may be layer lines, but this does not affect the strength during use. Please be aware that the housing may deform in environments exceeding approximately 50°C. Since it is relatively weak to force in the layer direction, please be careful when removing any double-sided tape that has been applied. We do not provide support for usage, such as setting instructions, so please research and use accordingly.