Slide these over your cap for longer heat retention and quicker extraction!  Silver is an alternative to the the copper collars others are using.  Select four different sizes to match your desired heat retention.  Larger caps will hold more heat.  No need to spin your Dynavap to promote even heat distribution.  These collars fix all of that for you!  Install by just sliding over the cap and applying a bit of pressure to hold.  Select size below.   Includes silver collar and cleaning pad.   Dynavap tip and caps are for demonstration purposes only.  Not included in the sale!   *Please note that we do not recommend these for use with induction heaters.  These are best for a torch.