A nice little grip rail on a pad. Professionally handcrafted by Broken Knuckle Fretboards in Connecticut. Full obstacle width 3 inches, length 10.5 inches, height 2 inches, pad: maple plywood width 3 inches, length 10 inches, height 5 inches, rail: nickel, length 7.4 inches, height 1.35 inches. We could talk more about it, but we have to? Broken knuckle fingerboards. More than a brand