These Osborne setting dies are made of superior-grade steel. Use for installing #3 plain grommets and tooth washers by hand.
Product Note: Setting dies are guaranteed against defects in material and craftsmanship, but this guarantee is not intended to include tools against wear and tear, over-strain, and steel hammering. To achieve maximum life of tools, use a dead blow hammer, rawhide mallet, and cutting pad . Strike at a 90-degree angle for best results.