Prestressed Cable Bolts: Prestressed Cable Rock Bolt is made of steel strand,and have better support strength ,be used in area that is not strong enough ,can prevent the strata to move in the lateral direction. 1.FEATURES : (1) Be made of steel strand,and has incomparable flexible capacity and anti-shearing capacity. (2) Be used in area that is not strong enough ,can prevent the strata to move in the lateral direction.it has better support efficiency that other bolts. (3) Has three or four cages in the body ,that can churn anchor grout sufficiently and hold more anchor grout . when the grout solidified, it can form a inseparable whole body between the bolt and strata ,that can improve anchor capacity