The spring clamping force is adequate to build despite the problems arising from width of about 7.5 cm large contact surface of the terminals sufficient pressure to hold a background fabric on a smooth metal rod, and to still be able to operate the studio clips still with one hand.
The initially conspicuous odor of the new studio clip fades after a few days when they are taken out of their packaging and stored in a normal-ventilated place.
Given the high price I evaluate the Walimex Studio Clip not like it very much (5 Stars), but only with me like (4 stars).