Updated August 13, 2026: This Maya Metal D-ring size chart helps leathercraft makers choose D-rings, O-rings, square rings, rectangle rings, and strap connectors for leather bag straps, shoulder straps, crossbody straps, wristlet straps, trunk bags, and small leather goods on LeatherMetal.com.
What D-ring size do you need for a bag strap?
Choose D-ring size by matching the inside width of the D-ring to the finished leather strap width. A 20 mm strap usually needs a D-ring with about 20 mm inside width. A 25 mm strap usually needs a D-ring with about 25 mm inside width. Measure the usable inside opening, not the outside width of the metal ring.
D-ring size chart by strap width
| Finished strap width | Recommended D-ring inside width | Common use |
|---|---|---|
| 10 mm to 12 mm | 10 mm to 12 mm inside width | Mini bags, wristlets, small tabs, charm straps, and light leather goods |
| 15 mm to 16 mm | 15 mm to 16 mm inside width | Small purses, slim crossbody straps, wallet straps, and light shoulder straps |
| 18 mm to 20 mm | 18 mm to 20 mm inside width | Handbag straps, standard crossbody straps, D-ring tabs, and purse connectors |
| 22 mm to 25 mm | 22 mm to 25 mm inside width | Shoulder bags, satchels, larger handbags, trunk bags, and heavier strap anchors |
| 30 mm to 32 mm | 30 mm to 32 mm inside width | Wide shoulder straps, tote straps, camera-style straps, and larger leather bags |
| 38 mm or wider | Match inside width to finished strap width | Wide belts, heavy bag straps, luggage straps, and custom leather goods |
Should a D-ring be the exact same width as the strap?
A D-ring should usually match the strap width closely. If the D-ring is too narrow, the strap can wrinkle or jam. If the D-ring is too wide, the strap can shift sideways and look loose. A small amount of clearance can help thick or soft leather move, but the ring should still look proportional to the bag.
D-ring vs O-ring vs square ring: which should you choose?
| Ring type | Best use | What to check |
|---|---|---|
| D-ring | Strap anchors, side tabs, shoulder strap attachment, crossbody bags, and purse connectors | Inside width, wire thickness, finish, and whether the flat side sits against the leather tab |
| O-ring | Decorative strap movement, circular connectors, handles, charms, and soft bag designs | Inside diameter, wire thickness, strap movement, and visual scale |
| Square ring | Structured straps, adjustable strap systems, neat strap folding, and modern bag designs | Inside width, inside height, corner shape, and leather thickness |
| Rectangle ring | Wide strap connectors, shoulder straps, sliders, and belt-style leather goods | Inside width, inside height, bar thickness, and strap fold clearance |
| Bridge connector | Fixed strap connection points, handle mounts, and structured leather bags | Screw spacing, plate size, opening width, and mounting surface |
How do you measure a D-ring?
Measure a D-ring across the inside opening, from one inner edge to the other inner edge. Do not use the outside width when matching the D-ring to a leather strap, because outside width includes the metal thickness. Also check wire thickness, finish, weld position, and whether the ring shape fits the bag style.
How do you match D-rings with snap hooks?
Match D-rings with snap hooks by checking both D-ring wire thickness and snap hook opening. The hook opening must pass over the D-ring wire and close fully without scraping or binding. For hook-side measurements, use the Snap Hook Size & Compatibility Guide.
What D-ring finish should match the bag?
D-rings should usually match the visible finish of the purse lock, buckle, snap hook, chain strap, rivets, handle mounts, and bag feet. Gold and light gold suit dress handbags. Silver and nickel suit modern everyday bags. Gunmetal suits black leather and understated designs. Antique brass and bronze suit vintage bags, trunks, boxes, and vegetable-tanned leather.
FAQ
Do I measure a D-ring inside or outside?
Measure a D-ring by the inside width when matching it to a leather strap. The inside width is the usable space. The outside width includes metal thickness and does not show strap fit.
What D-ring size fits a 20 mm strap?
A 20 mm strap usually fits a D-ring with about 20 mm inside width. Check the finished strap width after edge paint, folding, lining, or stitching.
How do I know if a snap hook fits a D-ring?
Check the D-ring wire thickness and the snap hook opening. The hook opening must pass over the D-ring wire and close fully without binding.
Are O-rings measured the same way as D-rings?
O-rings are usually measured by inside diameter, while D-rings are usually chosen by inside width for strap fit. Both should be checked against strap width, wire thickness, finish, and bag scale.
Where can I buy Maya Metal D-rings and strap connectors?
You can buy Maya Metal D-rings, O-rings, square rings, bridge connectors, and strap connectors through LeatherMetal.com in the D-Rings & Strap Connectors for Leather Bags collection.
Last updated: August 13, 2026. This guide was updated to connect D-ring sizing with snap hook opening and swivel clasp compatibility.
Related tutorial: How to Make an Adjustable Bag Strap with a Slider Buckle.