Edge Finder Construction Tool Steel Includes Protective Sleeve Number of Pieces 1 Single or Double End Single End Tip Diameter 0.2 in (Cylinder) Tip Shape Cylindrical Features Tool Steel Body and Contacts Centre Points and Scribed Lines Dowels Flats Grooves Ground and Lapped Edge Finders Round Work Shoulders Straight Edges Studs Overall Length 3 in Shank Diameter 3/8 in