These are the new version Double Trouble "3" Aluminum Dually Wheels. These will finish off any special project. They even include wheel hubs to cover the axle stub nuts to give it a 8 lug wheel design. Featuring out special hex head hardware. Specifications: Front Wheels: CNC Machined Billet Aluminum Fits Standard 12mm Hex Use Scale Hex Bolts for Realistic Look Wheel Size: 1.9'' OD: 1.9in / 49mm Width: 1in / 26.3mm Center Hole OD: 0.17in / 4.2mm Positive Offset: 0.55in / 14mm Each Weight: 2.26oz / 64g Rear Wheels: CNC Machined Billet Aluminum Fits Standard 12mm Hex Use Scale Hex Bolts for Realistic Look Wheel Size: 1.9'' OD: 1.9in / 49mm Width: 2.24in / 56.8mm Center Hole OD: 0.17in / 4.2mm Positive Offset: 0.59in / 15mm Each Weight: 3.53oz / 100g What's Included: 2x Front Wheels 2x Rear Dually Wheels 1x Miniature Scale Hex Bolt Tool for M2.5 & M3 Scale Bolts (2.5mm Hex) (Z-S0635)