RECENTLY VIEWED
Skip to main content
DK Hardware Professional Tax Exempt? Net 30? - DK Net Terms
Roll over image to zoom in
Product Features
Product Overview
Related Videos
Reviews
Questions & Answers
See reviewsSee reviews
30 Days Easy Return. We are the largest supplier of the most adaptable, personalized hardware in the industry. We work hard to ensure you're satisfied with our products.
WARNING: This Product May Contain Chemicals Known to the State of California to Cause Cancer or Reproductive Harm. To Learn More Visit P65Warnings.ca.gov
Features
- Eight-facet sheave holds line securely
- Load-sensing ratchet engagement can be adjusted with the included Allen wrench
- Allows a line to be eased instantly with control
- Hardkote-anodized aluminum sheaves
- Stainless steel swivel shackle
- Sheave Diameter: 2 1/4" (57 mm)
- Max. Line Diameter: 3/8" (10 mm)
- Max. Working Load (MWL): 500 lb. (227 kg)
- Breaking Load: 2000 lb. (907 kg)
- Weight: 3.7 oz. (104 g)
- Length: 4 1/16" (103 mm)
Diameter
3/8 Inch or 10 mm
Length
6 7/8 Inches
Type
Single
Weight
3.7 Ounces
Direction
Any
Safe Working Load
500 Pounds
Mount Type
Swivel Shackle
Ball Bearing
Plastic
Becket
No Becket
Integral Cleat
No Integral Cleat
Ratchet
Ratcheting
Sheave Diameter
57 mm
Product Overview
Ease that sheet smoothly out in the lightest air, and get an automatic ratchet block when it's breeze on. Shifting between ratchet and light-air modes is seamless. Harken 57mm Carbo Ratchamatic Single Block rolls freely in both directions under low loads and automatically engages the ratchet as loads increase. The 57mm load-sensing Carbo Ratchamatic is adjustable for many applications and line loading conditions. With 180 degree wrap, you get a 10:1 holding power. Commonly 57mm blocks are for jibsheets and spinnakers on small dinghies.