Pair of IH Cultivator Extension Bars for Farmall 140, 130, Super A, 100 Tractors, 30791BA, 510918R1 The 1st bolt hole is

The 1st bolt hole is closest to the plow point

The arms are 22" inches apart (inside measurement)

L306F192 Undermount and Mid-mount Ford 1920 Tractor

450 tractors

Pair of IH Cultivator Extension Bars for Farmall 140, 130, Super A, 100 Tractors, 30791BA, 510918R1 The 1st bolt hole isPair of International Harvester (IHC) Cultivator Extension Bars for International and IH Farmall 140, 130, Super A, 100, and Many Other Tractor Models. Case IH Cultivator Extension Bar part numbers 30791BA and 510918R1. These extension bars are used on most all IHC, IH Farmall, and McCormick cultivator units. These cultivator extension bars are also referred to as cultivator clamps, cultivator toolbar extensions or shank extensions.