This is the Universal CV Set for HPI Savage XS
#45 steel Steel construction, Harden to a jet black finish
Two Dogbones, two Axles, two 2x10mm Axle Pins, two 3.2 x7mm Pins andtwo 12.8mm diameter spacers
Installation between diff and wheel hubs
length: (120mm)diameter: .14 (3.5mm)