How to use:
1. Align the lens mount mark with the close-up ring mark and rotate it clockwise. When you hear a click, it means the lens has been installed in place
2. Align the mark point on the lens foreground ring with the foreground ring mounted on the mark point on the fuselage and rotate it clockwise when you hear a "click" sound, meaning it has been installed in place a> 3. Press and hold the lens release button on the camera body and turn it counterclockwise to remove the lens along with the foreground ring
4. Press and hold the release button of the close-up ring and rotate it counterclockwise; the close-up ring can be removed from the lens

Specification:
Item Type: Macro Extension Tube 13mm + 21mm + 31mm
Color: Black
Material: Plastic + Alloy
Focus Type: Automatic
Working Length: Approx. 13 + 21 + 31 mm / 0.5 + 0.8 + 1.2 inches
Mount: for EF / EF-S mount
Compatible Camera: For Canon 5D4 / 5DsR / 5Ds / 5S3 / 5D2 / 5D / 6D / 6D2 / 7D / 7D2 / 10D / 20D / 20DA / 30D / 40D / 50D / 60D / 70D / 80D / 77D / 90D / 850D / 850D / 850D / 850D / 850D / 8/ 200DII / 360D / 200D / 360D / 340D / 400D / 300D / 650D / 600D / 550D / 500D / 450D / 400D / 350D / 300D / 300D / 1500D / 1200D / 1100D 1000D

Package List:
1 x 13 mm Macro Extension Tube
1 x 21 mm Macro Extension Tube
1 x 31 mm Macro Extension Tube
1 x Instruction
1 x Storage Bag