Description
This 57 mm Ratchet Block, with Swivel and Cam Cleat, is yet another example of quality deckgear design from Harken.
It lets sailors hand-hold their loaded lines, offering balance between holding power and controlled easing.
Specification
Maximum Line Ø (mm):10
Maximum Line Ø (in): 3/8
Length (mm):103
Length (in):4 1/16
Weight (g):247
Weight (oz):8.7
Sheave Ø (mm):57
Sheave Ø (in):2 1/4
Maximum Working Load (kg):136
Maximum Working Load (lb):300
Breaking Load (kg):340
Shackle Pin Ø (mm):5
Shackle Pin Ø (in):3/16
Product Code:2138




![Harken 16mm Block w/Swivel [417]](https://www.fisherywave.com/wp-content/uploads/2025/12/harken-16mm-block-w-swivel-417-vqvbprkt41757.webp)

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