Manual hook formers, used to raise extension spring loops. DOP model makes “German style” loops. EO model makes “English style” loops.
DOP 1.5 and EO 1.5 for wire with a diameter from 0.5mm to 1.5mm. DOP 3.5 and EO 3.5 for wire with a diameter from 1mm to 3.5mm.
Several models available in stock, only used for demo.