Quad Reacher Moves by wrist action no finger movement required. Tension of rubber-band closure easily adjusts to accommodate individuals strength. Hand orthosis (lined with Plastazote® for comfort) also can be modified slightly. Precise enough to pick up a pin, yet strong enough to hold heavy objects. Stainless-steel and aluminum. Weighs 11 oz. 20"long Medium (64100201 & 64100202) MP (Measurement across the knuckles)-3" MP to Wrist (measurement from knuckles to wrist) - 3" Forearm Circumference- 8-9" Wrist Circumference - 6-7" Large (64100301 & 64100302) MP (Measurement across the knuckles)-3 1/2" MP to Wrist (measurement from knuckles to wrist) - 3 5/8" Forearm Circumference- 10-11" Wrist Circumference - 7-8"