Body Relief Depot stocks a number of hand held massage tools for back and shoulders. Knobble: The Knobble is about the size and shape of a standard doorknob and allows for deep, prolonged pressure to knots or strands of contracted muscle to be applied. Backnobber: The Backnobber provides trigger point relief, using its hooked design to apply deep pressure to sore muscles – whether in the neck and shoulders, or upper and lower back.