General purpose slitting/slotting saw arbors. Hardened all over (58/60 Rc) for added toughness on cutter locating surfaces and shanks. Shanks ground to within .001 T.I.R. of cutter location diameter. Extra long, strong body with protective black oxide finish. Super low profile on caps allows cutter to reach areas inaccessible with conventional arbors. Stout plug: extra support, less vibration. Weldon style shanks.