These 5/16" diameter steel rods are used to join warp threads to canvas aprons or beam sticks. They can also be used to attach warp threads to a section warp beam.
Sold individually.
Heavy Steel Rods (7/16") can be found here.
Note: Items with a shipping length of 48” and longer are subject to a surcharge, regardless of the shipping method selected. (Fee is imposed by the shipping carriers.)