DISCLAIMER: This item is not a Puffco official product or endorsed by Puffco in any way. This is an aftermarket product engineered by JCVAP Co.,Ltd to function in the Puffco Peak Pro device based on average measurements of many different Peak Pro units. By using this product, you acknowledge and agree that JCVAP/VGoodiEZ is in no way liable or responsible for Puffco products or their respective warranties, nor is JCVAP/VGoodiEZ responsible for Puffco product malfunctions and / or variance..