Harken 57mm Ratchet Block — Swivel

2026-01-21T11:34:36-05:00

Vendor: Harken
Type: Blocks
Price: 98.25

Carbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. On/off switch operates from both sides. Standard grip: medium/light air; 10:1 holding power.

Standard mainsheet block for: Club 420, ILCA, ISCA, Sunfish, Optimist, etc

heave Ø (mm) | 57 mm
Sheave Ø (in) | 2 1/4 in
Length (mm) | 103 mm
Length (in) | 4 1/16 in
Weight (g) | 85 g
Weight (oz) | 3 oz
Maximum line Ø (mm) | 10 mm
Maximum line Ø (in) | 3/8 in
Maximum working load (kg) | 227 kg
Maximum working load (lb) | 500 lb
Breaking load (lb) | 2000 lb
Breaking load (kg) | 907 kg
Shackle pin Ø (mm) | 5 mm
Shackle pin Ø (in) | 3/16 in
Holding power | 10:1