The Proto Plasmas are a high quality USA made wheel 

Proto wheels have a nice strong solid spoked core, so they are not the lightest wheels out there but it is rare you would have any issue with the core given how beefy it is.

Outer Diameter: 110mm

Core Width: 24mm

Weight: .55lbs (8.9oz) Per Wheel (w/Bearings)

Installed Bearing Set Included

PAIR OF WHEELS (2)

*PU- Polyurethane