Blue tape retainers

[Chuck Guzis]

On 06/09/2015 10:40 PM, Mark J. Blair wrote:

> Hmm, the NOS 3M 777 tapes that I got off eBay have "that one" seals.
> Did 3M later switch to Wright Line seals? Off to google pictures of
> random mag taps for edutainment purposes... Boy, do I know how to
> have fun!

The 3M ones that I've seen are hard white plastic (not PVC or whatever 
Wright Line used) with a keyhole-sort of affair that allows the circle 
to expand.

--Chuck