Full set (plus a couple extra, total of 90 straps) of medium size cork style bridle strap to replace missing or broken bridle strap in spinet, console, studio or upright action. Easiest option for hammerbutt with hole in catcher. Large/medium/small refers to the diameter of the cork on the end of the bridle strap, not length of the strap itself as they are all the same length. The holes vary slightly in size between piano makes, medium is the set I use most often but do use large and small from time to time. The cork on this set is tapered between about .210" to .270" and fits a 1/4" hole (.250") very well. NEW! Bridle strap insertion tool included with purchase.