Made with lightweight, but sturdy 1.1mm thick recycled sterling silver,  I do all the filing and sanding before adding the twists to these
 
Fully UK hallmarked including the coronation mark, I have a number of these available
Punched in London with the date mark for 2023:
 
A is 19cm in circumference (7.5 inches)
C is 23cm in circumference (9 inches)  (Sold)
 
And laser marked by Edinburgh with the 2024 Coronation Mark in the following options:
D is 17cm in circumference (6.75 inches)
E is 17.5cm in circumference (6 7/8 inches)
F is 18.5cm in circumference (7.25 inches)
G is 20.5cm in circumference (8 inches)
 
Also available but not photographed are 
 
I at 21 cm in circumference (8.25 inches)
J at 21.5cm in circumference (8.5 inches) 
K at 22cm in circumference (8 5/8 inches) 
L at 22.5cm in circumference (8 7/8 inches)
 
Listing is for one bangle. If you'd like a different size, please message me for timescales. - I currently have one blank I've had hallmarked available to make to a size larger than 23cm