3M Pulley 48 tooth for electronic skateboard

Electronic skateboard use 3M Profile Timing Pulley
Material: aluminum
Tooth number: 48 tooth
Using 15mm wide 3M Timing Belt

You can find in the market similar 3:1 ratio such timing pulley and belt combination for makers or hobbyist to modify the skateboard or so. 
16 tooth 8mm bore pulley available in stock.