Acoustic Guitar end pin plug, Larrivee or Taylor style, gold.

What do you do if your guitar has previously been fitted with a pickup and now has a 1/2" diameter hole where the strapjack was fitted?

One option is to use the two-part metal fittings used by Larrivee and Taylor. The inner part grips the endblock, and the outer part is then screwed up tight using an allen key. Gold plated version (I also have them in chrome if you're interested).

Requires a 3/16" allen key (not supplied) - I recommend using a long version.