Primary Machinery has a wide variety of quality used WHO mfg tub grinders. Find the WHO mfg tub grinder that fits your needs with our wide selection of wood recycling equipment for sale. Our WHO mfg used tub grinders are competitively priced to fit any budget! Our inventory is always changing, so if you don’t find the mulch grinder you are looking for, let us know, we WILL find it. If it is your Primary Machine, we make it OUR responsibility!