They're small in size

8 mm axle diameter

Compatible with wheel diameters 100 mm

Wheel diameter:84mmFrame-material:AluminiumBoot/shell type:SoftInner boot details:Ventilated

Roces PIC TIF Inliners - Black CUSTOM_179201 They're small in sizeOur Roces PIC TIF for men and women are great inline roller skates for transport and fitness. They have a nice and comfortable fit. They're small in size, so please choose a size that's one or two sizes higher than you'd normally choose for regular shoes. They have a high cut off for optimal ankle support. Specification Wheel diameter: 80mm Frame material: Aluminium Boot type: Soft Inner boot details: Breathable Closing mechanism: Laces, Powerstrap,