The working ends are 21 mm long. #9 (D1=0.96 mm / D16=1.27 mm with a .02 mm taper) #11 (D1=1.2 mm / D16=1.27 mm). Nordent endodontic plugger tips are made from spring-tempered stainless steel wire for maximum durability and used to vertically condense gutta-percha within the canal.