Sold: A set of used Schaublin B8 watchmaker ø8mm collets 0.2mm-8mm 44 Pieces 

clamping force 1400 Newton
Schaublin Type B 8     72-137 (thread 6.82x0.625)
Radial runout tolerances (concentricity) up to 3mm: 0.05 (L=10)  and up to 6mm: 0.06mm 
Sizes: see pictures and video
The wooden tray is not included
Weight 0.5Kg