Snap Collars simply snap onto the tube and can be rotated or slide into position during layup. They're a handy way to keep reference especially when rotating or flipping a tube around to make a second cut.
Tube Sizes: 5/8", 3/4", 7/8", 1", 1 1/8", 1 1/4", 1 3/8", 1 1/2", 1 5/8", 1 3/4", 1 7/8", 2", 2 3/8", 2 1/2"