MAGT Universal Running Treadmill Machine Safety Key, 1Pc Universal Sports Running Machine Safety Safe Key Treadmill Magnetic Security Round Switch Lock Fitness For Most Treadmills Red

【The Main Purpose】The treadmill safety key is designed for protecting the runner's safety while using the treadmill. 【Useful Tool】Once the safety key break away from the induction area of running machine, the running machine will produce a warning tone to prevent the user from falling down and get injured. 【Treadmill safety key】Treadmill magnetic lock can work easy and quick on most treadmills requiring a round treadmill safety key. 【With a strong clip】Running machine safety key can easily clamp to any part of your clothing and it's strong to hold. 【3 types】3 types of running safety key, easy to fit for different diameter treadmill switch.