Having previously used those nightmare Stairville Holdon MINI clips for years on our backdrop (lost too many bits of them to count) I was pleased to see that there was now a slightly more expensive alternative on the market to consider. The MIDI clips are far superior in design and way stronger. Managed to rig a front of stage curtain for an open ended marquee stage using these, a single tensioned wire, some Spannfix cables, 2 x 3 metre Stairville Stage curtain sections and some standard metal curtain rings from ebay... worked amazingly all day over 20 open/close trips with not one failure. EXCELLENT PRODUCT.