This is a Chooch Enterprises 9920 O Single-Track Concrete Tunnel Portal 7-3/4 x 7-3/4 19

This set includes a 2-56 tap

This is a Pikestuff 0015 HO The Shops Building Kit

double pole / double throw (DPDT)

Model Number: 48101

DPM 50300 N Scale Otto's Parts Building Kit LastUpdated_20260208033601 This is a Chooch EnterprisesThis is a DPM 50300 N Scale Otto's Parts Building Kit. Packaging may vary. Offer a wide selection of easy to assemble, finely detailed buildings with authentic modeled in architectural components. Kits include injection molded styrene plastic building, roof material, clear window material and easy to follow instructions that include painting and weathering tips. Decals purchased separately. Add realism and interesting detail to your completed building