Herreshoff Hollow Cleats - 6 SIZES AVAILABLEBristol bronze Herreshoff hollow cleats. Stronger and lighter than solid cleats. Bristol bronze codes listed below. All are hollow except the HM0031 as designed to be solid. HM0031 SOLID 4 3 8" LONG BASE IS 1 1 2" X 5 8" NO CODE HOLLOW WITH SKINNY BASE WIDTH 4 3 8" LONG BASE IS 1 1 2" X 1 2" HM5544 HOLLOW 5 1 4" LONG BASE IS 1 1 2" X 5 8" HM4768 HOLLOW 6 1 2" LONG BASE IS 1 3 4" X 3 4" HM3347 HOLLOW 10" LONG BASE IS 2 3 4" X 1 1 8" HM0074 HOLLOW 15"