Here is one of the harder Canadian insulators to find and its the Double Threaded CD 143 in a Blue color. Now it does have its issues like a hit gouge on the crown and a base crack seen in the pic. If you don't have one of these unusual pieces, this is a nice place holder till a better one comes along which isn't very often. Asking $40.00 US plus shipping. I accept PayPal in Gift Mode and first email as usual and supply your address to calculate shipping costs. Thanks for looking.