53 16mm Treadmill Safety Key Dual Insert Piece, 33mm spacing between inserts, suitable for most treadmills. 1 x Treadmill Safety Key. Size: approx.53 16mm, 33mm spacing between inserts. Made of high-strength plastic materials such as ABS, it is wear-resistant and drop-resistant, has a long service life, and ensures the safety of every exercise.
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