R121. 1/2" to 1" tapered reamer. We use this reamer every day in our shop! It can be used to ream out your stock pitman arm and knuckles to run the larger Chevy tie-rod ends. All 4x4 builders should have one of these in his/her toolbox! It comes with a t-handle, but we use this reamer in a cordless drill at very slow speeds. We always use plenty of cutting oil. This reamer will NOT ream out a welded knuckle or pitman arm - the weld area is too hard. However, it works great on knuckles and stock pitman arm.
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