New FSD hard end caps. These end caps are made out of a tough and harder vinyl material. They take up less room in pockets and have a flat end that absorbs impact better. The 3mm fits snuggly into a stand off holder. Better protection for the nose on kites.
The 3 mm is .350" long, 6 mm is .395" long, 7 mm is .415" long and the 8 mm is .440" long