This is an optional Team Associated Factory Team 5.0mm Aluminum Clamping Rear Hex Set. These rear hexes are 4mm narrower than the stock hexes. Use these to narrow the rear track width, or combine with the ASS91608 rear arm mount to retain the stock width.
Features:
Use with B5M/T5M
Reduces vehicle width by 4mm from stock width
Recommended to use with ASS91608 Factory Team Rear Arm Mount
Note: Requires the use of the optional Team Associated HD Rear CVA Axle (ASS71019).
 
This part fits the following vehicles:
DR10
DR10M
Pro2 SC10
ProSC10
RB10
RC10B5M
RC10B6
RC10B6 Club Racer
RC10B6.1
RC10B6.1D
RC10B6.1DL
RC10B6.2
RC10B6.2D
RC10B6.3
RC10B6.3D
RC10B6.4
RC10B6.4D
RC10B64
RC10B64 Club Racer
RC10B64D
RC10B6D
RC10B74
RC10B74.1
RC10B74.1D
RC10B74.2
RC10B74.2D
RC10SC5M
RC10SC6.1
RC10T5M
RC10T6.1
Reflex DB10
SR10
Trophy Rat 
ASS91609