Body Solid MR136 Manta-RayManta Ray Squat Attachment Maximum growth in your upper and lower body, ask any trainer, the Squat is 'The King of Exercises'. Its true, those nice comfortable machines work the legs, but for that anabolic edge, all the experts agree that the Squat is capable of inducing more and faster muscle growth than any other exercise. Manta Ray is the most significant advancement in freeweight training in 75 years. Its a semi rigid device that snaps onto any