The Metz - Cock Saddle - Grade 2 - Barred Variant is best suited to flies in the region of sizes 12-14. You may find that you can get some size 16's out of it, though if that's your aim you'll have more success from a Cock Neck as opposed to a Saddle, the former of which has much finer feathers than the latter.
Information on Metz grading:
Saddles and necks (also known as capes) are sold in grades. Each grade reflects the quantity of feathers that you can expect to receive, though does not necessarily reflect a change in quality of the feathers.
Grade 1: a saddle or neck of this grade will have the highest number of feathers available.
Grade 2: middle of the road, with a good number of feathers
Grade 3: a saddle or neck of this grade with have the least number of feathers available out of the grades.
To reiterate, the grades do not reflect the quality of the item that you will receive, and are only intended to act as a rough guide to help you get the most from your shopping experience, according to your precise needs.