["A drive wheel with 4 inches diameter CNC-machined with 0.75 inch bore and 0.24 inch keyway",
"Two idler wheels with 2 inches diameter: Each wheel is equipped with three 0.47 inch bearings",
"A track wheel with 3 inches diameter: Each wheel is equipped with three 0.47 inch bearings",
"Manufactured with state-of-the-art CNC machines",
"A 2.75 inch long M12 bolt (may be fully or partially threaded) should be used to mount idler and track wheels - No bolts included-"]
