Ortofon SPU question

[TOGA]

Hello,
I am too new to the LP world, so here is my question.
I like Ortofon SPU, but I have no idea how do we adjust for correct
length of distance between tonearm and stylus ? as SPU come as a fixed.
in normal cartridge we can loosen the screws that secure the cart to the headshell. which we cannot with SPU.
I like to have SPU A95 on my Jelco 750LS arm, is this possible ?

Toga