thanx .2 7/8 on the blade cant remember closed. they are beefy.with some stout springs.had a few hicups.,pivot halos,front pin on buffalo rolled on me peening,abrasive wheel come apart during the nick on the bone, so had to clean up the chatter marks,pin on the bone didnt get peened quite enough ,scared of crackin the bone .which have done.did i mention i have got to get a mill. but my old redneck grinder is runnin off 3 phase now.