EZ-endStop optical trigger Enhanced optical endstop trigger with offset of 1.00 / 2.00 / 3.00 / 3.50 mm. The standard one is too thin, and sometimes with certain light conditions does some strange offset. This one is more thicker, and gives 100% accuracy. /!\ PRINT IN BLACK /!\ or spray some black matte paint / schrinkable sleeve on it as i did. Since optical endstop react to light change and not beam crossing, you need to print it in dark material, non reflective is a must. Like it and share your make !