Spark Silicone Plug Carbon Fiber Medium. 5.25 inches in total length, 4.75 inches insertable, 2 inches wide, 6.28 inches in circumference. 6.1 ounce without packaging. The Spark Silicone Plug is the latest in hardcore anal equipment. Sporting a sleek carbon fiber design and a shape that goes in easy and stays in securely you can take anal play to the next level. This Plug is sized for the user just getting into anal play. Enjoy peace of mind with our 1 year warranty!