Description IMPORTANTThe NEWTRON® wrench (Ref. F81330) is used with surgical endodontics tips: AS3D, AS6D, AS9D, ASLD, ASRD, S12-70D, P14D, P15LD et P15RD.For other tips with yellow ring, the universal wrench (Ref. F00406) is recommended. ... Read more