of Rods makes in great rigidity and stability and also smooth sliding with 4 superior bearing rollers; Loading Capacity up to 11lbs/5KGs Great Compatibility 1/4 inches screw mount for Smartphones,Phones, DSLR cameras, camcorder, home and 1/4 inches screw hole on bottom for tripod, monopod or camera 4 to 3/8” screw adapter is included for wider compatibility for other devices Phone Clip and tripod for head are not included) Built-in Bubble on Slider base plate, buffer Stoppers on both ends and fine tuning damping locking knob make more easier in controlling. Easy to setup – everything are well assembled together, can be used immediately from shipping box.