Here's a new Snail Cam Brake Adjuster (x1) for for the following models from MG -

MG

MG Magnette ZA & ZB    (1953- 58 Only)

(Not for the later Magnette Mk4 & Mk4 which have Girling Brakes)

As you can see in the picture the 'Mask' is included with the Snail Cam.  

The adjuster is shown fitted onto the end of a Brake Shoe, that Brake shoe is not included in the price.

There are  x6 of these on a car - That's x4 on the Front Brakes (x2 per wheel).

You can buy any amount from 1 - 6. 

(The background picture is not included and is no longer available, it’s not fitting instructions and does not indicate the originality of these part or which cars this part will or won’t fit – See the Text).