Innovative tyre chock.

Specifications:

• May be used for pit bikes to full-size dirt bikes (accepts 8" to 21" wheels).
• Maximum tyre width: 130mm.
• Folding design saves space (height is 135mm when folded).
• Accepts mini wheels (up to 12") even while it is folded.
• Self-locking function prevents arm from opening up unexpectedly from folded position.