New design with optimized bearings four high quality bearings perfect structure better load capacity; - High density chromium anode oxidation treatment durable and beautiful design lightweight not only easy to use but also looks very nice; - Unique design of tripod which can be combined discretionary; - Adjustable damping according to the weight of the machine makes it more convenient; - The rail is of the world's top quality long service life; - Unique design of slider platform: rail equipped with liquid level meter on both sides makes fine-tuning more convenient; - The slider has a scale which makes it more convenient to use; - 1/4 "and 3/8" screw interface more practical