input: [WHAT IT IS?] On the inside and outside of your thighs. Abductors on the outside, adductors on the inside [WHEN DO YOU USE IT?] Abductors let you move your leg away from the body and adductors pull it back. (Imagine walking sideways!) [WHICH MACHINES EXERCISE IT?] Home gyms [MUSCLE GROUP] 
output: Hip abductors and hip adductors