The Chris King Part Headset Dropset Bearing Cap & Griplock Assembly crowns DropSet headsets and incorporates the Chris King GripLock® retention design, which keeps the headset together. Available in one size only, this is a genuine Chris King replacement part, so you know that it will fit your 1, 2, 3 or 4 DropSet Headset perfectly. For 5 DropSet Headsets, you will need a different kit.