K40 Allignment Laser

This is a bolt on option to the business ends of your K40. It uses two lasers (UMLIFE 5pcs 650nm 5mw Laser Head... https://www.amazon.com/dp/B091YSDPG5?ref=ppx_pop_mob_ap_share).

The lasers slide into the holes. Use a spot of glue when you have them lined up right.