This is the rear axle set from Tamiya.
This fits TG-10 and TB-01 series chassis.

FEATURES: Aluminum construction.

INCLUDES: Two axles

REQUIRES: Installation on a TG-10 or TB-01 series chassis

SPECS: Length: 1.5"/ 38.1 mmm

COMMENTS: These fit the TG-10 series which is a 1/10 scale nitro chassis or
the TB-01 series, which are the shaft driven electric sedan series.
Examples of the TG-10 series would be the Mercedes Benz CLK or the
Lancia Delta. The TB-01 series includes cars like the Subaru Impreza
WRC.