Number 12th Quick release coupling used in hydraulics explained! YouTube 6th Years Anniversary Logo, Icon and Vector Design. 6 Years Anniversary MGA MAGICAL 10 YEARS ANNIVERSARY LIVE FJORD NEWS 10th Wedding Anniversary Logo. The SRK 200BK 1 generation 2. 0 Quick Release features many options that conventional ball locking quick release system do not. The Generation 2. 0 is specially engineered with raised sections to prevent the scratching and stretching of the hub while a self locking feature adds increased safety and functionality. Features a black body with Black ring for added style and look. Each unit is made from the highest quality aircraft grade aluminum and is anodized for maximum durability and finish.