304 stainless steel material + ABS plastic stable camera safety This buckle is suitable for camera conversion straps whose strap holes are round holes. Triangular rings can be used for camera holes of other shapes, but there is no guarantee that the collar can be fitted. If the hole area accounts for more than one-third of the triangular ring, the collar can no longer be installed, Helps a neck strap attach to the camera eyelet. Widely used for camera shoulder strap, lanyard, waist belt and so on. Premium material ensures maximum stability and durability for long lasting usage. Name: Camera Lug Ring Applicable lens model: For SLR camera Type: Camera Strap Ring Type: Camera Strap Conversion Ring color:Black + silver Material:Stainless steel+ABS Package Contents: 10 x Camera Lug Ring Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.