Blue Diamond Equipment Innovations Inc. was asked to come with an idea to create an anchor pin that would allow one person to stretch out a string line as a guide to caulk mark a boundary line on a sports field. The result was the Sports Field Anchor Fork. The anchor fork is designed to penetrate hard ground, stay in place while the guide string is tightened straight, and then be easily removed once the caulk marking is complete. Rubber coated round handle along with non-slip finish on the step plate helps reduce injury while anchoring the unit. Comes complete with attachment for gripping string while tightening.