A good friend of mine is making me a fly tying bench, and he needs to know dimensions of various tools that I have. The only one that has me stumped (as I don't own it yet) is the 2 3/4" hair stacker from DR Slick. The base of the small stacker is 7/8", the medium is 1". Can anyone tell me the base diameter of the large stacker? Much thanks for any info.