https://www.ebay.com/sch/i.html?_nkw=Allen+Tel+Products+Gbconn+S1000+Sealant+Filled+Blue+Tubing+1000+Box&_sacat=0&_dmd=2

Allen Tel Products Gbconn-S1000 Sealant (Filled) Blue Tubing 1000/Box

$135.00
$87.00

Blue Super B wire connectors, 1000 per box.