Caplugs FP Series Finishing Plugs for Square Tubing FP-241 are black-colored plugs specifically designed to fit square tubing. These plugs are sized for different gauges ranging from 0.035" (20 Gauge) to 0.12" (11 Gauge) and tubes ranging from 0.5" to 2". This particular model has the following specifications: Tube Size 1.50", Wall Thickness 0.120" (11 Ga.). Providing a clean finish on completed products, our smartly designed FP Series plugs have shoulders that fit flush with tubing sides, ensuring that dirt, moisture and other contaminants are kept out of sensitive areas. They also protect against sharp tube edges. Caplugs FP Series Finishing Plugs for Square Tubing are fabricated from low-density polyethylene (LD-PE), a flexible and durable material that is resistant to water and a wide range of chemicals and weather types. It has a service temperature range of -94° F (-70° C) to 175° F (79° C). Caplugs is your global plastic molding partner, with 75 years of experience and over 10+ industries served. We take pride in being the leader with a team that combines top quality and service with the widest offering of products and capabilities to solve all of our customers' product protection and component needs. Our extensive line of premium products serves a plethora of industries, from aviation to medical, general manufacturing and everything in-between. At Caplugs, we provide the broadest range of solutions and the highest quality parts right when you need them. Our teams work diligently to ensure consistent results, with more engineers on staff, processes for creative solutions and molding experts for reliable quality. We are driven daily by our commitment to provide unmatched service and innovative products that perform.