Mounting blocks ø 22 NON ILLUMINATED 43 Head with 1 contact block on a 1 position clip Head with 1 or 2 contact blocks on a 3 position clip 43 Head with 3 contact blocks on a 3 position clip 43 Head with 4 or 5 contact blocks on a 5 position clip 50 Head with 4, 5 or 6 contact blocks 2nd level of contact blocks stacked directly on first row (3 position clip) 64,5 96