Hook and shackle assemblies on 4 1/2" through 14"sizes can be interchanged.
Can be furnished with bronze bushings or roller bearings.
Opening feature permits insertion of rope while block is suspended from gin-pole.
3" thru 18" 418 and 419 blocks have exclusive bolt retaining spring to assure no lost bolts.
Can be furnished with SS-4055 hook latch.
Pressure lube fittings.
3" - 10" feature dual rated wireline sheaves
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