Snap on Glow plug socket ?

[Rosso]

Hi,

I've been upgrading a few of my made in china sockets to Snap on stuff.

Two i changed are 1/4" deep 8 and 10mm from blue point to snappy.

All has been well until today when i went to remove a glow plug and found the Snappy ones don't fit - the inside of the socket doesn't allow the plug to go deep enough to engage.

The blue point ones do.....

Do Snappy make an internally deeper deep set of sockets ?

 

[Rosso]

I figured out its the broach which isn't deep enough on the socket, anyone confirm that ?