SCP Series Shipping Cap Protector SCP Series protectors were developed as packaging and shipping container caps to protect exposed NPT fittings. Our wide and semi-rigid pinwheel design increases the surface area in contact with cardboard packaging. They are flexible enough to absorb the force at the point of impact preventing breakthroughs which can ultimately lead to extensive damage. Material: Low-Density Polyethylene Color: Black TSE Series Tube Square End Plugs TSE Series tube square ends were designed to plug TSC Series square tubing. The TSE fits securely into tubing to create attractive and unique packaging. Material: Low-Density Polyethylene Color: Black 302 For other material and color options, contact customer service.