Unpack the pen as only the barrel can be sublimated. Because only the pen barrel can be sublimated, the size of the transfer image paper should be 4.18 x 1.35 inches; Using heat tape, transfer the sublimation to the of the pen; Bake in a convection oven at 375 degrees Fahrenheit for 5-6 minutes, rotating the pen halfway during baking; if your pen touches a metal while baking, the shrink wrap will melt Size information: The length of each blank heat transfer ballpoint pen is about 14cm/5.5 inches, and the handle diameter is about 10mm/0.4 inches for . The width of the tape is about 5 mm/0.2 inches, which is convenient to operate You can use your designed custom pens in , diaries, invitations and many other writing occasions; you can also use dye sublimation pens in office environment, study room or school environment, enjoy the design you created, it's fun You can write your friends' names or their favorite on the blank side of the blank heat transfer pen, and the finished product can be an for your classmates, friends or colleagues on Children's Day, birthdays and other festivals. Color: White Material: plastic Package Contents: 15 pieces of sublimation pens 15 sheets of heat shrinkable films Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.