1、Increased Macro Reproduction Range: The macro inversion ring adapter can make any 58mm lens become the Marco lens on the camera body, and greatly increase the macro reproduction range. 2、Lens Protection: The protection ring can prevent your rear lens mount fro m accidental impact; It comes with 58mm thread and allows you to attach any 58mm filter to protect the rear lens mount. When you reverse and m ount your lens, installing this adapter then it can protect your lens rear part. 3、Applicable Models: Macro reverse adapter ring and rear lens protection ri ng set is specially designed for EF mount 58mm filter thread lens and cam eras. 4、Easy to Install: One side with 58mm thread is suitable for the filter thread I ens, and the other side is similar to the rear lens bracket of the camera. 5、Aluminium Alloy: Macro reverse adapter ring and rear lens protection ri ng are made of premium aluminium alloy material, which is durable and sturdy.