Apply pressure with the thumb on the weak hand to the top of the wrench while turning the lever with the strong hand to avoid a slip. Nip came off no problem and installing new nips is easy.
Oops, in my first review, I posted my review of the field model powder flask when I meant to post my review of the nipple wrench. That's why I shouldn't post reviews late at night. Anyway, here goes.
It arrived today and I immediately tried it out on my 20 gauge Pedersoli Howdah pistol. It fits and works perfectly. It's exactly what I've been looking for. Shipping was lightning fast, also. Thanks, Cabelas.