HARKEN 57mm Carbo Ratchet Block with Becket and Cam, 2139

Harken 57mm Carbo Ratchet Block with Cam arms can be locked in more than five positions for fair leads.

Carbo Ratchet blocks allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. Lightweight Carbo Ratchets are available in 40mm, 57mm and 75mm sizes. All the Carbo Ratchets feature a recessed On-Off switch that is easily operated from either side. The 40mm cam-arm versions work in ratchet mode only. Commonly 57mm blocks are for jibsheets and spinnakers on small dinghies.

The 40mm, 57mm and 75mm Carbo Ratchamatic® is adjustable for many applications and weather conditions. The load-sensing ratchet block rolls freely in both directions under low loads, then engages the ratchet automatically as loads increase. With 180 degree wrap, you get a 10:1 holding power.

• Hand-hold your loaded lines
• Use for spinnaker sheet systems on dinghies, sportsboats, and medium keelboats
• Ratchet blocks are hand and crew savers
• Allows a line to be eased instantly with control
• On/Off switch allows the ratchet to be turned off in light air
• 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): 600 lb. (272 kg)
• Breaking Load: 1500 lb. (680 kg)
• Weight: 9 oz. (255 g)
• Length: 4 15/16" (125 mm)