fit for tent pole diameter=16mmMushroom caps provide excellent support for your boat cover, tent, or tarp, use tent poles or boat cover poles to protect tents and boat covers from punctures.Mounts on top of awning tent poles or boat cover poles to prevent punctures. Avoid tearing, stretching, and constant falling poles of your boat cover and tent, prolonging the life of your boat cover.Features:Material: ABSColor: black, yellow, redSpecifications: height 3.6cm1.41in, width 4.2cm1.65in, Inner hole diameter 1.6cmWeight: 14gpcsNote:Due to differences in lighting and screen settings, the item's color may vary slightly from the picture.Please allow slight size differences due to manual measurementPacking List:*Tent Pole Caps