Working Machine Safety Key Treadmill Magnetic Safety Switch Gym Lock Round Plug Description: Treadmill safety key: The safety lock is an automatic treadmill safety device. Material: made of high quality ABS, durable for a long time. Portable: lightweight treadmill safety key, easy to use. Design: The safety lock is placed in the groove of the panel, and the other end is pinned to the clothes, which is convenient to operate. Wide compatibility: This treadmill safety key is suitable for almost treadmill. Round plug for ; Rectangular plug for AD; plug for Tempo. Specification: Material: ABS Size Chart: Round: 3.2 cm x 3.9 cm/1.26 inch x 1.54 inch Rectangle: 4.6 cm x 2.8 cm/1.81 inch x 1.10 inch : 4 cm x 2,3 cm/1,57 inch x 0,91 inch The package includes: 1 safety key for treadmill