Boundless Terp Pen Spectrum / XL Coils

Brand: Boundless


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Buy 2 and get 10% off both.


Our ceramic coils for the Boundless Terp Pen Spectrum / XL, available in a 2-pack, are crafted from top-tier materials and encircled with medical-grade stainless steel wire. The ceramic coil heats up instantly upon activating the breath sensor, enabling you to immerse the coil into your preferred concentrate for an enjoyable experience.

To maintain the optimal performance of your Terp Pen Spectrum / XL, consider replacing its coil every few months using our ceramic coil 2-pack. Based on your usage frequency, it’s advisable to dismantle the Terp Pen Spectrum / XL weekly and cleanse its internal components with isopropyl alcohol. Ensure it’s air-dried after cleaning and execute a burn-off as outlined in the provided instructions before using it again.


  • Mouthpiece: The Terp Pen XL has a 10mm has tapered medical grade stainless steel mouthpiece, which fits the same sized water pipes.
  • Exposed Coil: The Terp Pen has exposed Ceramic Coil which can be covered with the concentrate cap
  • Concentrate Storage: The lid that covers the exposed coils also doubles as a magnetically screwed quartz storage jar.
  • Draw Activation: The Terp Pen operates on a single temperature setting and has no buttons. Simply draw and enjoy.
  • Battery: It’s powered by an internal 300 mAh 3.7v battery which is good for roughly 50, 10-second draws.

Cold & Hot Concentrate

With the Boundless Terp Pen, there’s the option to either take a traditional concentrate or a cold load. A hot load results in a more potent hit, while a cold load (loading the concentrate and then inhaling) gives you more flavor and less vapor.