Traktor Butter Rugs are made of a distinctive synthetic material with no added plastic or wax coating. The reduced friction between vinyl and platter minimizes additional noise and gives you more responsive control. Step up to the executive-class of slipmats! World Class Credentials With 25 years in the game, DJ Qbert is a living legend. His turntablist skills are unmatched, and his influence on the world of scratch DJing cannot be overstated. Qbert set up Thud Rumble as a platform to produce top-quality DJ tools, and promote scratch DJ culture through events, artist management and media production.