Removable Glass Plate Upgrade for FlashForge Creator Pro, no Z Shim Required v2.1

Everything you need to add a glass printing surface to the print bed without loosing build height and or modifying the Z endstop.
Includes: 6x9x1/8inch Thermal Shock-Resistant Laboratory Borosilicate Glass,Meets MIL-G-47033, Also known as Pyrex and Schott glass, this glass resists clouding and pitting and is highly chemical and heat resistant. With a low rate of thermal expansion, it is dimensional stable during changes in temperature.
Thickness tolerance ±0.008"
Includes four solid nylon corners to hold glass in place.
Three Stainless Steel Conical Compression Springs to replace stock springs.
Four washers to go between nylon corners and nuts.
Magnalub sample grease packet and 2mm allan key
If you need extra Borosilicate plates http://amzn.to/2x8NrZf
Up to date Installation document can be found here https://goo.gl/JSasGv
PEI surface can be found here http://a.co/cBhgRzQ