1BJX series of disc harrow mounted with tractor: 1,working width:1. ... ,working depth:140mm; 3,disc diameter:560(610)mm. 1BJX series of disc harrow mounted with tractor Products Description:1BJX medium ... company include: Qingquan brand disc harrow, disc plow, mouldboard plow, rotary tiller, potato planting (harvest) machine, cultivator, subsoiler, seeder, leveler, ridger ...