Nylon Reel Replacement Bobbin (Heavy Duty )Spare Nylon Bobbin to replace any broken Reels. Wear and tear over the years plus cattle standing on reels can cause breakages. Dont throw away the whole reel, replace the bobbin and it will be as good as new. Plastic Reels do not have the rigility or UV strength to stand up to African farming conditions hence the reason we only manufacture from now from UV stabalized Nylon. Its up to ten times stronger than plastic.