Product model: only for SIGMA AF 14-24mm 1:2.8 DN, not for SIGMA AF 14-24mm 1:2.8 DG, if you not sure DG or DN connect me

Usage: press down or lift up

Origin: self made，made by 3D print

Material: soft rubber, no damage to the lens

Note: The lens of the extender is so protrusive that general cap is unable to cover it, therefore a higher cap is made，although the appearance is a little rough, the material is sufficient and it can stuck the lens steadily，any question connect me ,no retrun