Roller skate

The roller skate, or "quad skate" is kind of skate with 4 wheels arranged in two rows. It is different from the inline skate.

Different models exist :

• speed
• hockey
• artistic
• dance
• recreational
• aggressive
• jumps
• indoor/outdoor
• etc...

You can build a quad skate with 4 elements :

• boots
• frames
• wheels
• bearings