Shell End Mill Arbors Style "B" Threaded for Draw Bar

Shell End Mill Arbors Style "B" Threaded for Draw Bar
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Threads for Drawbar

B&S #7 3/8" -16  B&S #10 5/8" -11  B&S #12 3/4" -10
B&S #9 1/2" -13  B&S #11 5/8" -11