A: A different arbor would be needed.
A: No. This arbor is to be used with hole saws with a diameter of less than 1-3/16". You need to use arbor part # 49-56-7040.
A: Probably not.
A: doubtful some larger hole saws require a larger adapter. the one I used only fit up to a inch or 1 1/8"
A: I doubt that it would fit and even if it does I wouldn't use this combination.
A: I do not believe it can be removed.
A: No, the pilot bit helps support its durability. You should look into other products home depot has to offer for your specific need.
A: Yes - back out the set screw.
A: Yes, if you turn the screw on the arbor it will loosen the drill bit.
A: Yes but I would suggest using a drill press,you will never be able to hold a hand drill to cut a circle. That's the reason for the pilot bit.
A: I've been trying to loosen the set screw (mine is just a hole where an allen wrench fits) for half an hour. It won't budge.
A: I used this arbor with a 1" no problem. Didn't try 7/8 but it looks like it would fit. I'd try it first before I got to a remote job site.
A: It should, it all depends on your kit.
A: It might...take your hole saw to the store with you to verify fit.
A: should work
A: yes if the 7/8 in, hole saw is designed to accommodate the shank size.
A: Yes, I bought mine last week and it seems to hold up on most surfaces.
A: I don't see why not as long as your saw blade doesn't have lock pins to hold it from moving. It is designed for a smaller type of blade that doesn't have a bit lock system. Hope that helps