Velbon QRA-4 Base Quick Shoe - Easy Attachment/Detachment for Video Cameras Thank you for viewing. This is a Velbon QRA-4 base. Never used. You can attach and detach tripods and cameras with one touch. For example, you can attach and detach video cameras with 1/4 inch screw holes, such as the HDR-CX680 and FDR-AX60, and tripods with 1/4 inch screws with one touch. I tried various types, but this type was the best in terms of size and ease of use. I used it with SONY video cameras FDR-AX55, FDR-AX60, and CX680. It was also easy to attach and detach to Manfrotto tripods. I will ship it with air cushioning and an envelope. I have 3 left, so if you are purchasing multiple items, please let me know the quantity. I will create a separate listing for you. Some have been used and some have not, but there are no problems with their use. I will ship them randomly, not necessarily the ones in the images. Thank you for your consideration.