Infinity Ring Splint Size (US) 1.5-3.5 Length 21mm

Parameters of the splint
Thickness 1.75 mm; Length = 21 mm
1Ring size (Narrow) = 1 1/2 (US) Diameter 12.78mm 
2Ring size (Wide) = 3 1/2 (US) Diameter 14.45 mm
Dot indicate the narrow side.
Other available sizes:
Infinity Ring Splint Size (US) 1.5 - 2.5 Length 21mm (one dot)
Infinity Ring Splint Size (US) 3 - 7 Length 27mm (three dots)
Description: 
You can use this device as a ring or as functional device for finger joint stabilisation. Please contact me for custom dimensions. I can modify the model according to your dimensions: circumstances, length and any prefered shape.
For customization I require:
1. Your finger size(s). You can give me a ring size No; or diameter in mm.
2. Splint length, mm.
3. Sketch or picture, if available. 
You can also print this splint in precous metal or select durable plastic (low cost material). 
I look forward for your feedback!