Sirui ST-Z Center Column Short
Including a short (only 7cm long) centercolumn, a mounting platform with a bubble level and a 1/4" and 3/8" Mounting screw.
You would need to use this short centercolumn if you want to fold out the legs on your Sirui ST-124 /125 tripod, and be able to work on a hight down to only 70mm.