The Rubber Oar Stopper keeps your oar shaft from sliding through the oarlock. Fits both Carlisle and Cataract oar shafts.
The 1" thick rubber stopper goes right over the oar shaft, not over the Molded Oar Sleeve.
The 1 5/8" inner diameter is a tight fit on the shaft. Use either soap and water or hair spray to lubricate the stopper and shaft to slide it on. As it dries, hair spray also gives an adhesive effect to hold the stopper in place.