Our Spotter arms come in pairs and can be rapidly and easily set-up to the required height of any athlete for the requirements of any given exercise. As such these reliable Safety spotter arms can provide the security and ease one’s mind when using heavier weights/loads, making them a valuable asset for both home gyms through to large scale training facilities! Our Spotter Arms have a Polystone ® G-scharwz HD plastic liner along their full length to protect the Barbell knurling during use!.