... 13T,16T,20T 2)brake:S420X150,420X180,420X220 3)Wheel Stud:10-M22X1.5 All kinds of semi trailer axle available Note:1 ... All kinds of semi trailer axle are available, such as BPW type axle, American axle, inboard drum axle, outboard drum axle, Spoke axle ... (spider axle), concave axle, low loader axles. etc. outboard brake drum axle