Cable and pulley replacement kit are made of steel,zinc plated finish,aluminum compression sleeves, durable, sturdiness and long-lasting use Heavy duty pulleys with 9-ball bearing for quieter and smoother movement for front or rear Two pairs of long cables, 2.6 mm x 158 in. cable straps 7 x 7 strands rated to 1200 lb Cable pulley replacement kit for torsion spring doors and extension spring door .It's perfect for do it yourself garage door repair and maintenance Package include 4 Pcs heavy duty 3 in pulleys,2 Pcs 2.6mm x 158 in extension spring safety cables,2 Pcs 2-1/2" S hooks ,8 Pcs compression sleeves ,2 Pcs cable clamps