Set of 2 high quality aftermarket blades for Woods 72″ (6″) rotary cutters. Commonly used on models BB72, RC6, RC72.20, RC2072, BF6.20 and others. Replaces Woods part number 57189KT. Please utilize your own resources, including the measurements below, to ensure Woods part number 57189KT or 57189 is correct for your application before ordering. Each blade is 28.5 overall length. 26.5 effective length (Center of hole to the end). 1 1/2 hole diameter.