These are useful when beaming long warps (similar to using warp sticks on a non-sectional beam). Place a divider in each section (on Leclerc looms) every 5 or 10 yards to prevent uneven build-up of threads and to keep uniform tension in the warp. They all need to be placed in the same turn.
They come in bags of 100. Available in two sizes: 1 inch and 2 inch.