The iFRONT 2.0 front end, with user-specific flexibility and rigidity, is installed for greater comfort and simple handling. The Black series includes two individual bending curves, while both short lengths have a modern progressive bending curve and a reduced, comfortable 28 mm tube diameter. All other lengths have a conventional bending line and a tube diameter of 30mm. For reliability and convenience, the Double Pin Lock system helps to securely fix the boom length while preventing tube twisting. Thanks to the different bend lines, the Black series fits almost all types of sails of all brands. The entire Black line is equipped with the iTAIL WAVE nok, which uses the patented Loop-Loop-Go 2.0 system and guarantees perfect sail selection to the nok itself.