Unverferth Manufacturing Co., Inc. grain carts and wagons, dual triple and custom built agricultural wheels, rolling harrow seedbed conditioner, seed runner and pro bulk tenders, grain train wagons, ripper stripper, zone builder, xtreme cart, Ray Rawson Zone Tillage, perfecta field cultivator, tractor wheels and rims, ripper roller, better bilt manure handling, top air pull-type sprayers, tillage products, zone builder, disk, in-row ripper, mccurdy, univerferth, uniferth, underferth, kalida ohio, Parker, Killbros, Brent, farm equipment manufacturer Unverferth Equipment Co.,Inc., manufactures a wide range of dual and specialty agricultural wheels, bulk seed tenders and augers, grain carts and wagons, tillage equipment, hay bale wrappers, and pull-type sprayers under the brand names of Unverferth, Brent, Top Air, Killbros, Parker and Better-bilt