this is for anyone w back or shoulder problems. i took two handles like fit on the shaft of curved trimmers. put them on the end of my lazer control.these are circular handles. this allows me to operate the controls with wrist action backb an forth ,also keeps the arms down closer to the body. this way my elbos rest on the arm rest and allow full controll. certainly not for everyone ,but u know if u have the troubles i mentioned. mabe it will work for u.