configured as to modify or trim the cuts 16 and 17 see fig1 when a portion is to be removed from an individual finger the resulting arcuate cut will be smooth and free of stress raisers fig1 illustrates a nipper generally indicated at 28 the nipper 28 has a first jaw portion 29 and a first handle portion 30 and a second jaw portion 31 and a second handle portion 32 the jaw and handle portions 29 30 and the jaw and handle portions 31 32 are pivoted together as at 33 the tool 28 of fig1 differs from the tool 18 of fig1 primarily in that it is provided with a pair of convex cutting edges 34 and 35 again it is preferred that the distance between cutting edges 34 and 35 and the rear wall of the jaw opening as indicated by arrow b be of a length equal to or greater than the length of a fixation plate finger the convex cutting edges 34 and 35 are sized and shaped to trim or modify the curved edge portions 11 and 12 if required it will be understood that nippers 18 and 28 could be of the double acting type the fixation plate 1 of fig1 could be provided with fingers which have scalloped rather.