D Rings , he doesn't do handles for the Vegan ones , as they are usually fashioned from leather. The D rings and fittings are good quality.
**Edit**.
The photo is a 3 inch and is the same as mine except i have flax linen as the second component. the 2 1/2 " he used to make but changed to 3 inch , it is a one off he is making for me as he found enough 2.5 inch material to make one strop, in his workshop. He Buys the material in 3 inch these days. I just wanted a narrower strop to compliment what i already have.