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TWSBI Diamond mini AL Fountain Pen
TWSBI Diamond mini AL Fountain Pen
All about nib sizes
Special version of the TWSBI Diamond mini fountain pen that features aluminium piston parts and an anodised aluminium grip section. The cap screws onto the end of the barrel to make a full-size pen.

Standard Diamond mini nib units can be fitted to this model by swapping the grip sections (they slide off easily).

Length capped = 117mm
Nib length = 19.6mm
Section length = 19mm
Section diameter (max/min) = 10.0/9.4mm
Barrel diameter (max) = 12.7mm
Total length (not posted, including nib) = 108mm
Total length posted (including nib) = 140mm
Weight = 23g
Nib material: stainless steel
Filling mechanism: piston
Packaging: Clear gift box with accessories