Instant Heat-Up description No buttons, just inhale to activate description Made out of 100% medical-grade stainless steel description No Butane Needed. The Boundless Terp Pen is powered solely by electricity. To use this concentrate vape, remove the magnetic cap, load it up, and inhale – or inhale and load it up depending on your preferences for a hot or cold load. Like the traditional dab, a hot load will give you a more potent hit, while the cold load (loading the concentrate and then inhaling) will create a flavor explosion in your mouth.