Black circular lens accessory with strap made by GoWing. - Brand: GoWing - Color: Black - Features: With strap - Shape: Circular - Features: With metal ring Thank you for viewing. This is a lens holder for Canon EF mount. While there are no issues with attaching it, one of the tabs does not return when pressed in to remove it. It can be reset by hooking the tab with your fingernail and moving it slightly. Due to the above reason, this item is listed as defective. I believe there are no other defects, but please understand that returns are not accepted as this is a used item.