sheave: ø 300 mm – Boston Blockport – SWL 5 ton – tested 20 ton

sheave: ø 300 mm

sheave: ø 450 mm

sheave: ø 300 mm – Boston Blockport SWL 5 ton – tested 20 ton

sheave: ø 320 mm – with swivl

sheave: ø 500 mm

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