This is for the back needle plate sensor which works with the conversion flick switch from standard z/z to straight stitch sewing mode
For the DX Series - HZL-DX5, HZL-DX7, DX-2000QVP, DX-1500QVP
Genuine Juki Part - 40163183
For the DX Series - HZL-DX5, HZL-DX7, DX-2000QVP, DX-1500QVP
Genuine Juki Part - 40163183