Description This is a simple and practical magnetic treadmill safety key with a diameter of 2.3 cm, designed to fit into the round hole on the treadmill console to start the machine. As long as your treadmill's key slot measures 2.3 cm in diameter, this safety key is compatible with various treadmill brands such as York, Bremshey, Horizon, Proform, and others. Features - Color: Red - Material: Durable hard plastic and magnet - Key diameter: Approximately 2.3 cm; Cord length: Approximately 140 cm - Magnetic safety switch for treadmill operation - Fits securely into the treadmill console’s round hole to activate the machine - Universal compatibility based on size fit - Simple and practical design for easy use Packing List 1 x Replacement Magnetic Treadmill Safety Key – 2.3 cm Diameter (Red)