Kinesis Mech Hanger/Dropout.
This Mech Hanger will fit:
Racelight: T, T2, T3, TK, TK2, TK3, 4S, KR210.
Crosslight: T, T2, T3, T4, FiveT, Pro, Pro2, Pro3, Pro4, Pro5.
Collect-in-Store for Stomp Ebox, Wired, ACDC, and many more items available for collection