A friend is working on a model 5 23J Sangamo. It's a double roller. However, the only staffs listed for the models 4 and 5 are the 114/47609 and the 662/47606. Both of these are single roller staffs differing by collet size. What staff did the model 5 Sangamo use? (The existing staff shattered when he removed it, so is not of much help.)
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