For use over the standard #312 top, it allows BSI's thin CAs (Insta-Cure, Insta-Flex and Super-Gold) to be applied a drop at a time. Thin CA tends to run everywhere, so these allow precise application.

BSI’s CAs come in 1/2 oz, 1 oz, and 2 oz sizes, along with an 8 oz that has a no mess, easy pour bottle for economical refilling of the regular bottles. In addition to the line of extender tips and fine teflon tubing that allow very small, controlled amounts of CA to be applied, CA applicators come in both a regular and a fine tip. Just squeeze the bulb and insert into an open CA bottle to draw out the amount you need. When using the teflon tubing, cut one end at a 45 degree angle before inserting no more than 1/4 inch into the bottle top.