Grip Strength Dynamometer Lite w 3 Pads Walkers Specialty Accessori 5 x 4 * Double Cutters 5 x 4 * Double door locking system * Each door has individual key * Keys cannot be removed when lock is in open position * Removable and adjustable shelves * High quality steel * Doors are suspended on full length piano hinge * Can be set or mounted on a wall * lluvia™ is IP68 Waterproof Certified❗What does this mean Take manual muscle test readings with your grip strength dynamometer * Use the MMT handle to convert any hydraulic grip strength (hand) dynamometer to a Manual Muscle Test dynamometer * MMT handle comes with 3 push pads: straight curved and small circular * Use optional dual grip handle to stabilize dynamometer during test procedure *