Here is a selection of plastic fence spools. The first is marked Red Snap'r. These also come in yellow. The second is marked Dare 3114. It also comes in a black version. Next is unmarked made by American Farm Works. It is ribbed to give it extra strength for it's small size. The next three are made by Gallagher and are unmarked. This is a nail/screw on type. It has a spool (shown seperate) with a pin that can be taken out to replace a damaged spool. These were used for fence and electric tape applications. Neat-O.