Models View all K40 air assist and targeting 14 278 0 QRE1113 - Miniature Reflective Object Sensor 5 94 0 Beer tap handle dry erase board with 3/8-16 threads 8 74 0 MQ-2 Gas sensor 34 1208 1 Blower Adapter - K40 Laser Engraver 7 60 0 Endstop bracket - for MPCNC 4 58 0