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1For the size: short bars: D6x15.44mm, middle bar:D6x26.84mm, long one: D6x42.88mm, the type is hexagon
and round, the type of hexagon is just like the pencil we use usually.


2The Diameter of ball is 0.5". There are total eight bars can be around the bars. for 15.44mm long bars can build up a quadrangle, and the line in the quadrangle is just 26.8mm, four 26.8mm long bars can build up a quadrangle which the line in is just 42.88mm.


3For the colour: we have seven kinds of colour: red, blue, green, yellow, white and black and metal colour WE have CE certification.