WHAT ARE KNEE BLADES?!? | MYSTERY BOX EP. 33What are knee blades? Well, we made this video and we still don't totally understand. But thank goodness Luke was there to help us, he is the master of weird stuff like this. Subscribe to him! https://www.youtube.com/channel/UCgXvdMSK8ZSgm9RcfcmuO8Q Get everything you need to learn how to skateboard at https://brailleskateboarding.com For media or brand inquiries email jen@brailleskateboarding.com For YouTube Collaborations email devin@brailleskateboarding.com