Listing is for a single NGK Y-755RS Glow-Plug from the Box of 10 shown

These fit the 24Volt  SD33 and SD33T 1987 onward and also the  SD22, SD25, SD33 Generators

The pictures are of the plugs on offer and is what you will receive PRICE IS FOR ONE 

there is also a screenshot of the specs.

PATROL 3.3 SD33T / 24 Volt 1987 –> Y-755RS

PATROL 3.3 SD33 / 24 Volt         1987 –> Y-755RS