I have several of these.... $100 each.
--- they are "new" (never been used).... but I have had them in my shop for several years.
They are 48" long
1.625 (1-5/8") diameter
Mounting hole diameter = 1/2" -- and center of that hole is 1.5" from the end.
These are very nice "Forged" bale spike / spear
They Come with a mounting sleeve.
-- Sleeve length is 6"
-- Inside Diameter of sleeve = 1-11/16" (1.6875")
-- Outside Diameter of sleeve = 2-3/16" (2.1875")