Fiber laser lens cap

Cap designed to replace the one from my f160d 1064nm lens as i'm in too much of a hurry to remove it apparently. Fit like a glove. 90mm diameter, printed in tpu, words Remove Before Lasering engraved into the cap (not that it helped me any). Even burns through quicker than the original one. If you're anything like me print a few of them, you're probably going to need extras (is the fume extractor for the smoke from these?).