These are white MPC1000 sliders with blue line.
Please Note: These are reproductions and new, so the color white may be a little off from your original depending on age. We suggest ordering a pair to insure they match.
All White Sliders can be found here - https://www.mpcstuff.com/q-link-slider-knob-for-mpc-1000-500-mpd16-choose-color/ where you can select any line color.
