These are the 11x28x1.1mm 8 Coil Shock Springs for the HPI 1m Cup Racer. FEATURES: Steel construction, gold in color INCLUDES: Two 11x28x1.1mm 8 Coil Shock Springs SPECS: Length: 1.1" (28mm) Width: 0.43" (11mm) Wire Diameter: 0.04" (1.1mm) jxs 12/23/11 ir/jxs