Velocity Dyad is a sturdy, middle-wide rim suitable for everyday use in all conditions. Popular for cargo, touring, commuter, and even mountain bikes. The Aeroheat and Dyad are the same rim, now consolidated under the Dyad name Manufacturer Part Number 3600M-55932 UPC 9332151018735 Model Velocity Dyad Rim Rim Diameter 26inch Rim Type Rim Brake Tube Type Spoke Hole Count 32 hole Brake Compatibility Rim Brake Rim Width (Internal) 18.5 Brake Track Machined Manufacturer Spec ERD (mm) 537 Valve Presta Color Black/Silver Weight 440 Wheel Size 26" Defined Color Black ISO Diameter 559 / 26" MTN Hub Drilling 32 Rim Material Alloy Tire Type Clincher Rim Center Offset (mm) 0