... included:Curing chamber/Autoclave, buffing machine/grinding machine/Tread buffer,tread building machine/tread builder, rubber stirring machine, rubber extruding machine/extruder, envelope spreader, ... buffed off tire old tread,its working together with Buffing machine Used truck tire/tyre retreading machines ----other accessariesTread ... 22.5-16", 7.50-16", 8.25-16"9.00-20" ,10.00-20", 11.00-20", 12 ...