Offering for sale this genuine, matched pair of heavy-duty industrial. Both blocks are stamped with the authentic OTC manufacturing part number. When used in tandem as a matching pair, they comprise the standard. Set engineered for use on. 25-Ton to 30-Ton capacity hydraulic shop presses. 1891 (Individual blocks forged with casting # 36450). 25-Ton Press / 30 Tons Max Force per Pair (10 Tons Max Each stamped). 1 Pair (Consisting of Two 36450 Blocks). Essential for properly supporting both sides of long shafts or cylindrical components across a shop press bed. Thick, ...