Enhance your Pulsar RöK experience with the 5PC Silicone Extended Collar. This certified upgrade item ensures an exact fit and can be used with most carb caps, offering versatility and convenience. The beveled top edge provides a superior air seal, elevating your vaporizing experience. Sold in sets of 5, this extended collar is a must-have addition to your collection. Please note that the Pulsar RoK device is not included.