TTONE DIY Overdrive Guitar Effects Pedal True Bypass Stompbox Pedals OD2 Kits Aluminum Enclosure Unfinished(NO HOLES) Guitar pedal enclosure unfinished means it need you to DIY the holes by yourself. NOTE: In order to let buyers experience the fun of assembling, It need you to assemble it by yourselves. If you'e not 100% sure you could make it assembled successfully, please purchase prototypes directly. Making the DIY kits needs basic knowledge of circuit and welding experience, ability to understand circuit diagram and schematic diagram. Beginners might not be 100% successful to make it, please select the DIY kits with reasonable difficulty level based on your own ability. Enclosure model: 1590B (112(L)X60(W)X32(H)mm/ 4.4"*2.4"*1.3")