Features: Brand new and high quality A perfect substitute for previous silicone bed leveling mount, lightweight, have better heat insulation and temperature resistance, Not easily deformed, can reduce vibration and freely adjust the hot bed platform Adopt engineering plastic - PEEK, which have enormous advantages: flame retardance, abrasion resistance and self-lubrication etc, provide superior wear resistance. Due to itself heat-resistance, use with the heat bed insulation, can effectively reduce the heat transfer from hot bed plate to frame profile support, thus better protect the extrusion frame kit to cut down deformation of profile. Package Includes 4pcs Black Hot Bed Leveling Mouts and 4pcs screws. The screw can not be screwed to avoid screw slipping. Just gently tight it while installation. Specifications: Material:Silicone+ABS Package Includes: 4x Hot Bed Leveling Mounts 4x Screws note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.