Welesh plugs are cheaper to machine, everything about building a car is about price.
They are all different sizes.
A male horse comes in many sizes. They can be ponies. They can be welsh size. They can be the huge Clydesdale horse.
If your asking about FREEZE OUT PLUGS then it has 8 of them.
There are butt plugs in different sizes. You start with the smallest one.
25mm
a welsh plug is a plug in the side of the block and the heads. these fill the holes left after casting.they actually allow the sand to be removed that is used during casting so as you have a hollow block which allows for the water jackets. in the USA these welsh plugs are called freeze plugs. they really do not stop the coolant from damaging the block if coolant freezes they are specifically to block the casting holes
For plugs that can be adjusted the NGK catalogue states 0.8mm for all engine sizes of 405.
I have a 1996 Chevy astro w/ 4.3 L vortec... these plugs fit that motor.
Sounds like welsh plugs to me... but without knowing what the car is makes it hard.
Plugs are different from regular body piercing jewelry because they are intended to "plug" a space. Plugs are used when people gauge (stretch) their piercings. Plugs are most common on lobe piercings, but can be used on virtually any piercing, as long as there is room to gauge. Plugs can be hollow or solid and come in a variety of sizes.
Well that would depend on the manufacturers sizes. However since Welsh 'A's tend to be smaller ponies with refined head a halter sized for a small pony or pony in general would probably fit fine.