This is the Shock Mount Suspension Pin Set for the Traxxas X-Maxx Monster Truck.
Fastens bottom of shocks to lower front and rear suspension arms
Two each; 4 x 25.8mm Pins, 4 x 38mm Pins
Diameter: 0.16" (4mm)
Length: 1.01" (25.8mm), 1.5" (38mm)