This is an N Scale Turntable Motor Drive from Atlas Model Railroad Company. FEATURES: Grey plastic corrugated metal-look building which contains the motor drive unit. Powerful DC motor. Belt driven. Simple hookup. Made for Atlas N Scale Turntable #2790. Detailed pictorial instructions. INCLUDES: One N Scale Turntable Motor Drive Unit. REQUIRES: N Scale Model Train Equipment. Adult Supervision. SPECS; Scale: N (1:160) Length: 3-1/4" (84mm) Width: 2-5/8" (67mm) Height: 1-5/8" (41mm) sdw 1/29/01 ir/jl