This is a very nice used 42 mm diameter metric threads right hand threaded eye bolt. The through hole measures approx. 3.125" The thread length is approx. 2.5" I have had several of these and they all look the same, this one is exactly like the one below.
Budgit hoist and machinery moving lifting tool tools lifting rings eyes sling hook hooks
If you need a specific size of anything just ask.
If in Michigan add 6% sales tax. Thanks!