From Wikinline

Specifications

Model	:	Rollerblade Racemachine Junior (2010) - Speed, Kids
Type	:	Hard Shell (front strap + laces + heel buckle)
Frames	:	Aluminium (270mm/300mm)
Wheels	:	84mm (max 84mm)
Bearings	:	SG9
Spacers	:	8MM
Sizes	:	13J-3, 3-5.5 US
Price	:	150€ (100€ Frame Kit)

Overview

Adjustable speed skate available as boot only, with separate frames+wheels kits.

Details

• Composite shell with fiber glass reinforcements.
• Boots and frames sold separately.
• The frames are compatible with both 150mm and 165mm spacing.
• Micrometric heel buckle.
• Each of the two sizes is adjustable to four different sizes.