Hi Glyn,
Here's some information from the manufacturer's website (www.brisa.fi):
Blade length: 120 mm
Blade width: 18 mm
Blade thickness: 2.5 mm
Total: 233 mm
Weight: 69 g
Holes 2x4.1 mm, 2x4.65, 1x6.4 mm
Ground: Half Convex
Finish: Satin
Steel: Stainless AUS-8
There you can buy...