HobbyKing™ S600/S700 Carbon and Metal Quad/Hexacopter Retractable Landing Skid Unit.
Suits Park Servos with maximum length of 36mm, width of 15mm and a 25T output spline.
Mounting Dimensions: 33x24mm
Diameter of Landing Strut: 16mm
very well made but they don't fit with turnigy 930 suggested by HK see the picture on the file tab """ message to hk change the suggested servo""
Looking very good, putting these on a self build hexacopter in the future, dont forget to locktide all the screws or they fall out in flight.