Syringes for pole syringe

We have got following assortment:

PSD3 for pole syringe PS3, 3 ml
PSD6 for pole syringe PS6, 6 ml
PSD12 for pole syringe PS12, 12 ml
BD3 blowpipe syringe for pole syringe with special head (foto at blowpipe syringes)

ISD12 for pole syringe IS12, 12ml