General description The 75Pcs Sublimation Keychain Blanks Set is perfect for DIY enthusiasts and crafters. This comprehensive package includes 75 double-sided keychain boards in five different shapes: Round, Rectangle, Bone, Square, and Heart. It also comes with 75 plastic retaining clips and 75 keyrings, making assembly a breeze! Technical specifications Material: High-quality MDF Thickness: 3mm Shapes and Sizes: Rectangle: 5.6x4 cm / 2.2x1.5 inches Bone: 5x3.5 cm / 1.3x1.9 inches Round: Diameter 4.4 cm / 1.7 inches Square: 4.6x4.6 cm / 1.8x1.8 inches Heart: Diameter 4.4 cm / 1.7 inches Color: White Installation Set the temperature of the heat transfer machine to 190℃ / 374°F. Heat press transfer time: 40-45 seconds. Remove the protective film from the keychain board before heat transfer printing. Usage Both sides of the keychain can be heat transferred, allowing you to create personalized gifts or unique crafts. These keychains can be used as bag decor, pet necklaces, Christmas tree