Ah...there's the difference. This was a call out to DA Grizz owners...and I have one and used it as I mentioned (yes, part #57). I think I had read somewhere that the true 870's had a couple different sizes based on what year the SG was made. Some work, some don't. However, that would be speculation (as I dont' own a true 870). The other way I've heard it being done is with a wide woodworking spade bit (for drilling a largish hole). Again, this is just something I've heard (not seen), if you're looking for an alternative to buying the tool. You could probably use anything wide enough and strong enough to crank on.




















































