25 Round Key Chain Blank Sublimation Heat Transfer Polymer PVC Printable Size : 1,5 x 1,5 ( 39 x 39 x 3 mm ) Press Temperature : 180 C ( 365 F ) Press Time : 180 seconds Weight : aprox. 10 gr Average ( 25 = 250 gr ) Packing : Individual including ring and metal chain in a transparent bag ( like picture )