Bonny Doon 95-Durometer Urethane Insert Set for 0.45 kg. Bonny Doon Forming Hammer

Designed specifically for the 16-oz. Bonny Doon urethane hammer, (and the larger-sized original 10-oz. model) these inserts are threaded to be interchangeable with the flat-face insert of the hammer, giving you both a domed, 95-durometer face ideal for forming curves and a harder flat surface for your forming needs. This set includes one domed insert and one flat insert.