SHOWIRK Annular Cutters(also Called Broach Cutters&Core Drills)are special designed for metal manufacturing industry, heavy industry, mechanical processing industry.Have TCT & HSS materials for choosen.They played as hero on the industry field.Manufactured from premium quality HSS Annular Cutters & TCT Annular Cutters with specially designed tooth geometry for immediate centering and a fine,burr-free finish.Available in a wide range of cutting depth in 35mm,50mm and 75mm.