Personalize your key ring with these rectangular tags from Make Market. Made specially for use with sublimation inks, embellish these blanks with stylish designs that also make great gifts for friends and co-workers. Details: Unfinished white 1.5" x 2.5" (3.8cm x 6.3.cm) keychain size Makes 4 keychainsKey rings included Double side sublimation MDF, iron and PVCComplies to TSCA Title VI Sublimation Instructions:Pre-heat to 356°F (180°C) and press for 80 seconds. Do not exceed 400°F (204°C).Always reference manufacturer's instructions for recommended use, time and temperatures for each heating machine, as they could vary. Surface will be hot. Use protection when handling the finished product.