Roll line killer plateplease be aware that not all sizes are held in stock but we are happy to order them in for you as a special order item delivery normally takes 2 weeksthe new roll line killer plate designed for derbysizes are shown in wheelbase length in mma highly technical frame with cross brace structure and great structural rigiditydifferently angled truckscreated from the fusion of the best characteristics of both the db12 and the matrix in collaboration with top athletes and coach