The Treadmill Emergency Stop Key with Dual Plug Key Replacement #4A16 is a red plastic key designed for gym and training equipment. It features a treadmill lanyard key for emergency stop situations and comes with a 30-day manufacturer warranty. With a height of 3.50cm and a length of 6.00cm, this key is a reliable and essential accessory for maintaining safety during treadmill workouts. Made in China, this key ensures a secure and effective way to stop the treadmill in case of emergencies.