All of our wicks come at an 8 inch length. Our wicks are primed with high melt natural wax. They come standard with 20 mm tabs. The Burn Pool for this product is 2.5 inch to 3 inch diameter. This means that it is suited for a container of up to 3 inches in diameter. The HTP series is designed to provide the benefits of a self-trimming wick posture with rigidity approaching those found in cored wicks. High-performance fibers, along with other natural materials are engineered into a specially constructed braid, producing a more predictable wick posture. HTP wick is especially well-suited for tough-to-burn formulations that contain many additives. It is also an excellent choice for paraffin, vegetable, and gel candle systems.These HTP wicks are pre-waxed and tabbed, and features a 6mm sleeve rather than the industry standard 3.8mm. The longer length means increased safety for glass containers. Please be aware that containers made from very thin glass or a lower quality of glass can crack from the heat of the wick.