The Magnetic Coupling 1 Pair Medium Arm 2A-000-005 is a precision-designed accessory for N gauge model railways by Dapol. This product is specifically designed for DC-powered systems and operates at a scale of 1:148. It features a digital control system, making it an essential component for collectors and enthusiasts looking to enhance their model railway layout with realistic couplings for medium-sized arms. Ideal for creating smooth and efficient train movements, this magnetic coupling is a must-have for any N gauge railway layout.