but a few derailleur hangers don’t meet the spec

The second identifier - separated from the first by a backslash - indicates the diameter of the steerer tube

These feature a one-sided lock-on collar

Escape - 2011-2015

Ergon GA3 Lock On Single Bolt Grips Black Small can be discounted but a few derailleur hangersTrail comfort grip with miniwing The GA3 mini wing offers the perfect combination of wrist support and trail performance; now offered in two sizes and seven colors providing the perfect fit and style for each individual rider. The GA3 optimally supports and relieves common wrist pain while the perfect ergonomics allows you the ergonomic control to take your ride to the limit.