3 9/32" x 8" BAYONET LOCK BACK INVERTED SPOT FACER PILOT ARBOR TOOL HOLDER
BACK SPOT FACER HOLDERS. For use holding back / inverted spot facers or countersinks with approx 9/32" single bayonet lock drive. Each tool holder is about 8" overall length. These are marked MM285-S. 2817 x 8".