9.52mm
For: JUKI（重机）LU-53. 55. 562
      SEIKO（精工）STW-6.7.7B.8.8B.8BV.8M.8BM.8V.8VM.8VP.8VPM.8BVPM
      SINGER（胜家）111W155.156.211G155.156.211U165.166.211U365/6.211W151.155
      CONSEW（康秀）137.139R-1.224R-1.225VMG.226RVM-1(slotted shank)