The Roller Pulla Bush is increasingly among the choice for any side puller, however, now that increasingly heavier fish can be fished, the need for stronger material arises. The XL Roller Pulla Bush features a larger internal PTFE bore, so you can use the thickest types of elastic in it, while still being able to rely on ultra smooth action, without any resistance. Preston recommends having the XL Roller Pulla Bush installed by a professional, available at many angling stores and from people who repair pole rods.