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MK IV #1 for boats 28' to 36'
Harken MKIV 3 roller reefing and roller furling for 1/4, 9/32, and 5/16 wire with 1/2 or 5/8" lower clevis pin. Standard length of system is 45' 11" and can be extended up to 52' 11" with the purchase of an additional extrusion and connector. Unit specific lower toggle not included and must be purchased seperately.