Diameter: 59 mm.Tread: 45 mm.
Sharp-lip profile (outer wheel edge angle) that boosts grip when carving and turning.
This profile is not designed for doing slides: instead, you should use wheels with a round lip.
These wheels have a hardness of 78a: they are so-called "soft" wheels.
They make skating more comfortable (better for absorbing bumps and smoothing uneven surfaces) and also provide good grip.
This hardness is not ideal for doing slides. Instead, you should use slightly harder wheels (80A to 88A) with a rounder profile.