GRIPPY: 59mm footprint for extra bite on the skating surface.;PRE-ANGLED BOTTOM: Zero Break In Period. Angled to prevent wheels from touching (guaranteed up to 66mm);LENGTH: 30mm 5/8 Stem;COLOR: Greyish White;POPULAR: Used my many skaters and designed to meet the high demands of derby and other skating. By Atom Wheels. Non-markingSold as a pair.