Description This is a treadmill safety key designed to stop your treadmill in a short time, and it is made of sturdy material, sturdy and practical for a long-lasting use. And it is equipped with a magnet design, which is easy for you to install it, and you can have a safe fitness with this safety key. Features -Color:Red -Material:PP, Aluminum Alloy, Nylon -Size:5.20X2.90X2.80cm/2.04X1.14X1.10in(Clip) -Size:3.00X3.00X2.00cm/1.18X1.18X0.79in(Disc) -Adoption of practical and anti-wear material, sturdy and durable for long-term use. -Easy to use and simple to operate. Just place the safety lock in the panel groove, and the other end to your clothes. -With this magnet, there is no need to worry about treadmill users being injured on the treadmill. -Suitable for adults, children, the elderly, keeping safety while running on the treadmill. -Lightweight and compact size, not taking up much space, not increasing extra burden. Adoption of practical and anti-wear material, sturdy and durable for long-term use. Easy to use and simple to operate. Just place the safety lock in the panel groove, and the other end to your clothes. With this magnet, there is no need to worry about treadmill users being injured on the treadmill. Suitable for adults, children, the elderly, keeping safety while running on the treadmill. Lightweight and compact size, not taking up much space, not increasing extra burden.