Check the listing for details. EOM PEI Sheet - 3D Printer Build Surface - 3M 468MP Tape Pre-applied - Amber. Condition: New. Listed at 15.95 USD. PEI (Polyetherimide) , also known as Ultem, is a reusable, relatively maintenance free, perfect build surface for bothABS (with a Heated bed) and PLA (hot or cold), other materials such as Metal, Wood, ABS+ and manyothers also works just fine. PEI sheet is appealing due to its “no-surface-prep” conditions, which make it convenient to work with.Additionally, printing on PEI sheet requires no support rafts as parts adhere directly to the surface with no issue.Light sanding with 600 grit and up will help increase the adhesion.This PEI sheet is Pre-applied with 3M 468MP Adhesive Transfer Tape for your convenience. 100% NO Bubble - 3M 468MP Tape Machine Pre-applied!!Refund Guarantee for our PEI Sheet!!!Please contact us first for any support and non-satisfactory issue. We are US supplier and will guarantee you 100% satisfactory with our service.