First come, first served. Anonymous delivery. Small Kisshun, Big Horn, Echo Horn. All stainless steel, with stainless steel sockets. Pipe diameter: 63mm, thickness: 2mm. Length: approximately 200mm. Lid: 3mm. Two sockets: 8A. Welded and polished. Air valve not included. Can be fixed using U-bolts, etc. Each item is handmade, so please understand that there may be some scratches and dents. Installation support is not available. Installation and driving are at your own risk.