This flexible plate for the Railcore 300ZL and 300ZLT. No surface treatments, no coatings (except for rust prevention) Ready for you to apply any surface you want to it. or grab one of our plates with PEI or GeckoTek!! It has more flex in it that some plates, making it easier to bend to remove your parts. So stock up on these Plates and get to experimenting with different print surfaces and treatments.