_x000D_ Black - Round Tapered - Height 8.75 in. - Base Inside Diameter 6.5 in - Top Inside Diameter 4.375 in._x000D_ The K&N Drycharger is a silicone treated, polyester wrap that is made to cover K&N Air Filters or Personal Watercraft Flame Arrestors. These Drychargers, which are similar to the K&N Prechargers, contain uniform micron sized openings that allow high air flow. Yet, due to the Drychargers silicone treated polyester wrap, the amount of water that reaches the air filter or flame arrestor is limited._x000D_