This is a Pair of 4 x 8 x 3mm Ball Bearings from HPI. b017
FEATURES: These bearings are used in many of the HPI RS4 nitro and electric kits. Rubber sealed and double shielded for long life.
INCLUDES: Two 4 x 8 x 3mm bearings.
SPECS: Inner Diameter: 4mm Outer Diameter: 8mm Thickness: 3mm