With the Chimera Quick Release Speed Ring for the Hasselblad D40 flash, set up and take down of Lightbanks and softboxes becomes as easy as flipping a lever. This Speed Ring fits Lumedyne, Norman B Series, Hasselblad D40, and Sunpak 120J flash heads. The Quick Release Speed Ring also makes it very easy to move Lightbanks around sets, through doors, and tight spots without disassembling the Lightbank. The cost of the Quick Release Speed Ring is only a fraction more than regular "static" Speed Rings. The value in time savings and ease of use will more than pay for the difference.