10 steel shaft butt extensions (0.600″). Double-length, double-sided design; cut in half for two pieces. 3″ tapered insert fits inside shaft to extend clubs up to 3″. 10pcs Golf Steel Shaft Butt Extension Extender 0.600 ” (double sided) Shaft butt extensions for steel shafts Increase the lengths of your clubs Comes as a double length (requires cutting in half to produce 2 extensions) Diameter: 0.580″ or 0.600″, Total Length (after cut in half): 6″ (3″ tapered portion, goes inside the shaft + 3″ outside extension)