Spektrum Flight Controller: Habu STS - SPMA3230B-SD 3x18mm Steel construction gives these rails

Steel construction gives these rails significantly more resilience than plastic chassis components

Direct bolt-on fitment for Associated B4

Genuine Kyosho spare part manufactured to OEM specification

making it a straightforward like-for-like replacement after damage or a solid base for a fully custom paint scheme

even glue bond around the full bead

Spektrum Flight Controller: Habu STS - SPMA3230B-SD 3x18mm Steel construction gives these railsThe Spektrum SPMA3230B SD is a flight controller unit removed from a new E flite Habu STS (EFL01500) kit, sold as a spare part for pilots who need to replace a faulty or damaged controller in their Habu STS jet. This is a used condition spare it retains residual glue from its original installation, which is consistent with removal from a factory fitted airframe. If your Habu STS has lost its flight controller and you need a direct factory match