Assembly instructions for the Play Y Axis Upgrade w Heated Bed reference "Injection Molded Bar Ends", which are no longer included in the kit. These bar ends are printable files, found here :). Upgrade Instructions: https://docs.google.com/presentation/d/1hmc4vbRSuDWYvIkrlQySzokvfZEtUth0CXmeZTqEs2U/pub?start=false&loop=false&delayms=3000