A Genuine (NOS) SME Acorn Nut Wrench. This Wrench is suitable for all SME 3009 & 3012 Tonearms. This has to be one of the hardest SME 3009 / 3012 accessories to find !!! With this little tool you will accurately be able to adjust the acorn nuts without leaving those nasty screwdriver marks on them.Why ? Because it's an SME (NOS) part ! The correct tool for the job !