Maybe, but probably not.  To check, the expansion nut for 7/8" steel bars is 5/8" at the widest point, the one for 1" steel bars is 3/4".  All Hollow-Tube fitments seem impossibly loose before tightening.  It is just an indirect result of our efforts to make a solid metal-on-metal connection that still fits as many bars as possible. The design of our hollow-tube fitments depends on two points of contact:  The expansion nut, which must be tightened and deformed forcefully against the inside of the bar, and the conical hilt of the nose, which is pulled against the inside lip of the handlebar in the last moments of tightening. It adds up to tightening it two times; once to deform the nut, then loosen a turn and press the assembly into the bars and wiggle it to make sure the hilt of the nose is seated, then tighten again.  At that point, there should be no play at all, in any direction, and it should stay put till you loosen it.