Protective covers for both the threads and the tip! Perforations allow drainage & drying, and reduce weight. A large hole allows racking on a carabiner when not in use and for finding them again. No more searching pockets and pack bottom for caps and mesh covers that refuse to be found! One length covers threads and tips on both stubbies and long screws, given that the actual threaded length of most popular ice screws are identical. Top of sleeve is wider for easier screw insertion. Stiff material and wedge action holds on to the screw. Material: polyester-reinforced polypropylene. Length: 4-5/16 inches (11 centimeters). Weight: 0.3 ounces (8 grams). Standard shipping is included in the price, however minimum order quantity = 3.