The Speed Vents incorporate Seismic’s Defcon urethane, molded around an Energy Conversion hub. Defcon urethane ensures that the wheels will be fast, responsive, and predictable when sliding. The EC hub makes the wheels lightweight and easy to push into slides.

• Diameter: 77mm
• Width: 55mm
• Contact Patch: 55mm
• Durometer: 77a, 79a
• Lip Profile: Sharp
• Core Placement: Offset
• Wheel Surface: Smooth