This is a 39mm Drive Shaft Set for the Tamiya TA04.FEATURES: Silver steel construction.INCLUDES: Two drive shafts (dogbones).REQUIRES: Assembly on vehicle.SPECS: Length: 45.1mm (1.78") Diameter of shaft: 3.10mm (.122")COMMENTS: These are for the Tamiya TA04-Pro, TA04, TL-01, FF02, WR-02, TG10, and TB-01. pjm 9/17/02 ir/kh