This kit comes with every tool you will ever need to repair and maintain your Glowforge Basic, Plus, or Pro. 
Comes with:
1x 1.5 mm Allen Key 
1x 2 mm Ball End Allen Key 
1x 7/64 in Allen Key 
1x 2.5 mm Allen Key 
1x 3 mm Allen Key
1x 4 mm Allen Key  
1x T10 Torx Allen Key 
1x T20 Torx Allen Key 
1x Phillips Screwdriver
1x 11 mm Combo Wrench
1x 1 in Scraper
1x Hook Pick Tool
-The 1.5 mm Allen key is used for removing the mini fan that is in you laser head. Get behind all those crevices so you can remove dust that can fall onto the lense.
-The 2 mm ball end Allen key is used for removing the main exhaust fan. Either to clean or to remove and replace with an external fan. The ball end is required to get at hard to reach bolts that you have to come at an angle. 
-The 7/64 in Allen key is used for removing the 4 bolts that hold the radiator, intake fan and motherboard to the machine.
-The 2.5 mm Allen key is used for removing one of the three screws that hold on the PCB board attached to the head.
-The 3 mm Allen key is used for replacing your belts and pulleys. The bolt that holds on the pulleys can be loosened in order to release tenision to remove the belt easy. Also need to remove the clamp bolts that keep the belts attatched to the gantry and carriage plate. 
-The 4 mm Allen key is used for removing the wheels on the side of the gantry.
-The T10 Torx wrench is required to remove and clean the assist fan attached to the carriage plate and its vent for cleaning or replacing. The t10 can be used to pull apart your honeycomb tray for cleaning. 
-The T20 Allen key is used for removing the screws that hold the side rails to the base of the machine and the back plate.
-The phillips screwdriver is used for removing the daughterboard, the coolant tank, water pump, and the bottom metal shield that covers several wires and hoses.
-The 11 mm combo wrench is used for removing the nuts on the lid hinges, to remove the lid and hinges.
-The 1 inch scraper is used for removing adhesive used to keep certain parts together. there is adhesive that holds the side glass pieces to joints that attach to the backplate. There is also adhesive that attaches two ribbon cables to the glass. As well the back plate has adhesive that holds it to the back of the plastic housing if you need to replace the rails/backplate. 
--The hook pick tool is used to pull the 3 clips behind the aluminum stickers that hold the side glass pieces to the body of the machine.