so installing this set gives you a matched left and right carrier built for the EB48

SPECS: Outer Diameter: 64

Satin chrome finish wheels

This is the E-Z Track® Graduated Pier Set by Bachmann

Hot Racing SCXT9278 27T/8T Heavy-Duty Steel Bevel Gear Set Axial SCX-10 II Trains so installing this set givesHot Racing SCXT9278 27T 8T Heavy Duty Steel Bevel Gear Set Axial SCX 10 II This is a pair of Hot Racing 27T 8T HD Steel Bevel Gear Set for Axial AR44 Axles. FEATURES: Hardened steel construction High pinion design keeps center of gravity low Provides overdrive for front axle INCLUDES: 8 Tooth Pinion Gear 27 Tooth Steel Bevel Gear SPECIFICATIONS: Gear Pitch: 0. 9 Module Gear Ratio: 3. 375: 1