Size ......................... My calipers reads approx. .344" Inside diameter
Head Dia. .............. .794" HSS Knurled
Condition ............... Very nice used, some are new, it is basically identical to the one in the photo. I use this same photo for all of my drill bushings of this type.
If you need a specific size of anything just ask.
If in Michigan add 6% sales tax. Thanks!