Welded and Extra Thick:These D-rings are heavy duty(3 and 4mm thickness) and are welded which is important, that way when a dog decides to run after something it doesn't pull the d-ring apart.Strong enough for large dogs!

Many use:D-rings for dog collars,clothing and harnesses projects.For sewing projects like making lanyards,Paracord key chains,jewelry,cosplay handbag,purses or leather work projects for your DIY needs.Also for the webbing,fabric craft,key leashes,apron straps,nursing covers,lanyards,etc.

Good silver plating,rust proof.They are smooth with no burs or sharp points.The color is nice and bright, very shiny.

They are heavy metal,made to last! Strong and sturdy.

Size:Small size Inside Width: 0.62"(15mm),perfect for 0.62" Width straps. Inside Tall: 0.38"(10mm). Thickness: 3mm. Large size: Inside Width: 1"(25mm),perfect for 1" Width straps. Inside Tall: 0.6"(15mm). Extra Thickness: 4mm. Package included: 6 small D-rings and 6 large D-rings.