They are so easy to attach. The strap ring is just under 1" (inside) across the top, so these would work well with either 1" or 3/4" straps & bag handles. 

Each anchor comes with 2 screws and a washer. Tip: Make sure you stabilize the insertion area on your fabric so that they are nice and secure. Use the washer as a template to mark screw holes, and an awl or large Leather punch to poke holes in fabric for screws and pins. I like to make 3 holes to go over the pins and screws. The holes can be touching or overlapping, that is fine. Add some glue around the pins for security.

Measurements:

• Inside measurement of strap ring: 7/8" (23 mm)
• Overall Length: 5 1/4" (13 cm)

Sold in a 4 Pack

TIP: After you are happy with it and it has been tested for fit, apply a small amount of suitable glue to the front/back plates to keep them in place. Use Fray Check on cut holes.