Barbed Connector tools include Plastic Tubing Coiler Assemblies in both large and small sizes. These tools aid in the construction of a flow manifold or reaction coil. Each features a number of 0.13″ holes evenly spaced, perfectly designed to pass soft-walled tubing with an outer diameter of 3.2 mm or less. By first threading your tubing through one of the holes and then wrapping your tubing around the shaft of the assembly, passing the tubing through each hole as you reach it, you can easily coil your soft-walled tubing in a uniform fashion. The Small Adapter is approximately 1.5″ long; there is an optional, longer adapter that is 3″ long and that features an additional pass-through hole for longer coils. Each adapter is manufactured from acetal resin for mechanical strength and durability.