MSR TIRE TRUER MADE OF ABS PLASTIC. UPRIGHT AXLE HOLDER IS MACHINED FORM 6061 T6 ALUMINUM FOR PRECISION.COMES WITH EVERYTHING YOU NEED TO TRUE SLOT CAR TIRES. SANDING BAR COMES WITH FINE AND COURSE SANDPAPER INSTALLED. NEW DESIGN MEANS NO INTERRUPTIONS!!! MACHINE COMES IN VARIOUS COLORS. REVISION #3