Electronic Edge Finder, Ball Diameter 3/64 in, Construction Stainless Steel, Includes Table, Number of Pieces 1, Single or Double End Single End, Tip Diameter 0.4 in (Ball), Tip Shape Ball, Battery Size Alkaline 23AE, 12V, Features Contact Ball, Hardened Shank, Overall Length 6 13/64 in, Shank Diameter 3/4 in