Flexible steel plate with high chromium content, easy to bend and clean. Much easier to remove prints and avoid damages during the process, especially for small prints. Re-level the bed. Please adjust the z limit switch after installation. It should be 2.7mm higher. That means the printing height will be reduced about 2.7mm. You can print a spacer to compensate the difference. The magnetic base offers powerful magnetics, ensure perfect fit with steel plate. The 3M adhesive has strong viscosity and good adhesive at low temperature to make it hard to fall off after bonding with platform. The two easy lift tabs(handles) make it easier to remove the steel plate from the magnetic base. The spare steel plate can achieve continuous printing, restart printing before you start cleaning the first, save your time. Please clean up your build plate with alcohol to make sure there is no any resin or dust left on the surface. The build plate must be clean and dry. And you need to stick and compact the magnetic base on build plate to make sure no any bubbles. Otherwise the magnetic base would peel off. Please wait for 72 hours after installation and before printing. Tips: You can use hair dryer blow the magnetic base evenly with hot wind for 5-10 mins after installation to increase the adhesion. Size: 140X84mm Package includes 2x flexible Steel Plate & 2x megnetic base sticker