FAST ZipNut? technology provides automatic operation. Zip-Nut? holds the load as the cylinder retracts. Quick release levers open and close puller bars for fast installation and removal..zipnut?技術提供快動操作。拉母?持為氣缸縮回。快放杠桿打開和關牽引桿快安和拆卸的。VERSITILE ROV’s, Hard Suits or Divers can operate the system at any depth. Available in 30-Ton 6″ and 60-Ton 5″ stroke Models. Use in multiples of 2, 3 or more..Versitile ROV硬服或潛水員可以操作系統在任何深度。30噸660噸5“中模型。使用2的倍數3或更多。EASY TO USE Auto-Puller assembly pushes on and pulls off standard threaded rods.易于使用的汽牽引組件推和拉了標準紋桿。