This 67mm-EOS mount Macro Lens Reverse Adapter Rings is threaded on one side to fit the filter thread of your lens,the other side is mounted onto the for Canon EF-ES mount camera body.With the lens being reversed,it greatly increases the lens macro reproduction range capabilities,this saves your cost of buying an expensive macro lens for macro photography.

Steps of use:
1.Take out your lens from your camera body.
2.Mount the adapter ring to your camera body.
3.Reverse your lens with 67mm thread and screw it to the adapter ring until it is tight.

Note: Autofocus,automatic diaphragm (AE metering),and other functions dependent on communication between camera body and lens will be disrupted with this reverse ring mounting on the camera body.

To properly use this lens reverse adapter ring, you have to meet the below two conditions:

a.You have a for Canon EF-ES mount camera,below are some of the EF-ES mount cameras for your reference:
Compatible with for Canon EF-ES mount 1D,1DS,Mark II,III,IV,1DC,1DX, D30,D60,10D,20D,20DA,30D,40D,50D,60D,60DA,5D,Mark II,Mark III,7D,Rebel XT,XTi,XSi,T1,T1i,T2i,T3,T3i,T4,T4i,C300,C500
b.You have a lens with 67mm filter thread, below are some of the lens(Mounts Any lenses with Ø 67mm filter thread to a EF-ES mount-Series Camera)

Compatible with For Canon 67mm Lens:
EF 70-300mm/4-5.6LISUSM
EF 70-200mmf/4LUSM
EF-S 10-18mmf/4.5-5.6ISSTM
EF 70-300mmf/4-5.6ISUSM
EF-S 18-135mmf/3.5-5.6ISSTM
EF35mmf/2ISUSM
EF 70-300mmf/4-5.6ISIIUSM
EF 70-200mmf/4LISUSM
EF 24-85mmf/3.5-4.5USM
EF-S 18-135mmf/3.5-5.6ISUSM
EF100mmf/2.8LISUSM
EF-S 17-85mmf/4-5.6ISUSM
EF-S 18-135mmf/3.5-5.6IS

Compatible with For Nikon 67mm Lens:
AF-SDX 18-70mmf/3.5-4.5GIF-ED
AF-S 70-300mmf/4.5-5.6GIF-E DVR
AF-SDX Nikkor 16-85mmf/3.5-5.6GEDVR
Nkk or 18-140mmf/3.5-5.6GEDVR
AF-SDX Zoom-Nikor 18-135mmf/3.5-5.6GIF-ED67mm
AF-SNikkor 28mmf/1.8G
AF-SNikkor 35mmf/1.4G
AF-SNkkor 85mmf/1.8G
AF-S 24-85mmf/3.5-4.5G
AF-P Nikkor 70-300mmf/4.5-5.6EEDVR
AF-S Nikkor 70-200mmf/4GEDVR
Nikkor Z 85mmf/1.8S
AF-SDX Nikkor 18-300mmf/3.5-6.3GEDVR
AF-SDX Nikkor 18-105mmf/3.5-5.6GEDVR

Compatible with For Sigma 67mm Lens:
16mmf/1.4DCDN
35mmf/1.4DGH SMArt
100-400mmf/5.0-6.3DGOSHSM Contemporary
35mmf/1.4DGH SMArt
18-50mmf/2.8-4.5DCOSHSM
18-50mmf/2.8EXDC
APO 50-150mmf/2.8IIEXDCHSM

Compatible with For Sony 67mm Lens:
EPZ 18-200mmf/3.5-6.3OSSLE(SE LP 18200)
18-135mmf/3.5-5.6SAM
FE 24-70mmf/4ZAOSS
E 18-200mmf/3.5-6.3OSS(SEL 18200)
FE85mmf/1.8(SEL85F 18)
28-75mmf/2.8SAM(SAL 2875)

Package:
67mm-EOS Reverse Mount Ring x 1pcs
(Original Manufactory Package)