The Pu Air Hose is made of several materials. PVC hoses, the most economical option, are very durable and abrasion resistant, but aren't very flexible compared to other types. This can create a problem if you use it a lot and get easily frustrated by an unruly hose. Polyurethane hoses, or poly hoses, are widely considered the best option for the widest variety of uses. They're lighter than other types of hoses and tend to remain flexible, even in very cold working conditions. Hybrid hoses are a blend of polyurethane, PVC and rubber. They're very flexible and durable, and they're also least likely to kink or be difficult to unravel. In the end, consider your budget and tolerance to tangles to make your purchase decision.

Hose size addresses two important factors—length of the hose and the inside diameter. Air hoses typically come in 25-, 50- or 100-foot lengths, and all have their advantages and disadvantages. If you're only going to use it to air up tires in a small garage, 25 feet might suffice. But a 50-foot hose is much more versatile, and a 100-footer is even more so. Buying a hose that is too short is a lot more trouble in the long run than having one that is too long. But a hose that is too long will leave you with more rolling and storage problems. Concerning diameter, most hoses are either 1/4 or 3/8 inch. In general, 1/4-inch hoses are lighter, less expensive and easier to roll up and store. Wider hoses, on the other hand, limit frictional loss. So, if you're using a tool that needs every bit of air you can get to it, a 3/8-inch air hose is the better bet.

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