The Wicked “Cross” board & quad was developed especially for rollerblading and skateboarding. This multifunctional tool can be used for 3/8" (9.5mm), 1/2" (13mm) or 14mm nuts. The tool also includes a bearing puller.
A special gadget is the built-in bottle opener.
 
Video presentation :here
 
This cool and conveniently sized tool should always accompany you during your sessions!