HEXAGONACY GROUND PIN is the lastest exploiting product of ANSHAN MACHINE MODEL LEADS CO.,LTD. The distinction between the new product and the traditional BALL CAGE PLAIN just change over from the point touching working of steelball to the line touching working of roller, then when the mould works, the side pressure bringed to the guide post will increase by geometric series.Therefore, it will furthest improve the oriented accuracy and durability of the guide post.