Blocks
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29mm single Zircon block with becketSKU: HK2186Harkens small Zircon block with one 29mm sheave and becket for ropes up to ø6mm. Ceramic ball bearings for fine trimming of sheets. Learn More
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29mm single Zircon blockSKU: HK2185Harkens single block from Zircon series with small 29mm sheave for ropes up to ø6mm. Ceramic ball bearings for fine trimming of sheets. Learn More
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40mm Zircon blockSKU: HK2190Use the Harken Zircon blocks for precision trimming. The blocks are very efficient that you can adjust the sail and sheet tension perfectly. Harken Zircon blocks are made for jib sheets, spinnaker sheets and mainsail sheets. Learn More
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40mm Zircon block with becketSKU: HK2191Use the Harken Zircon blocks for precision trimming. The blocks are very efficient that you can adjust the sail and sheet tension perfectly. Harken Zircon blocks are made for jib sheets, spinnaker sheets and mainsail sheets. Learn More
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57mm Zircon blockSKU: HK2195Use the Harken Zircon blocks for precision trimming. The blocks are very efficient that you can adjust the sail and sheet tension perfectly. Harken Zircon blocks are made for jib sheets, spinnaker sheets and mainsail sheets. Learn More
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57mm Zircon block with becketSKU: HK2196Use the Harken Zircon blocks for precision trimming. The blocks are very efficient that you can adjust the sail and sheet tension perfectly. Harken Zircon blocks are made for jib sheets, spinnaker sheets and mainsail sheets. Learn More
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Series 40 Ball Bearing Orbit Block Single RF45101SKU: RF45101Ultra LightWeight . Low friction 2-stage Orbital ball bearing system. Highest working load in its class. Low profile and compact. High performance cleating. Easily fitted and securely retained Dyneema® Link head Learn More
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Series 40 BB Orbit Block, Single, Becket, Swivel Head RF45110SKU: RF45110Swivel shackle head for unlimited block rotation.
Stainless steel shackle head and compatibility with sharp fixing points.
Ultra low profile integrated becket. Learn More -
Series 40 Ball Bearing Orbit Block Single, becket RF45111SKU: RF45111Ultra low profile becket
Easily fitted and securely retained Dyneema® Link head Learn More -
Series 40 BB Orbit Block, Single,Bkt,Cleat,SwivelHead RF45130SKU: RF45130Single, Becket, Cleat, Swivel Head* Learn More
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Series 40 BB Orbit Block, Cheek RF45151SKU: RF45151Base suits curved mounting surface. Low mounting points for maximum strength Learn More
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Series 40 RTA Orbit Block,Auto, Single, Swivel HeadSKU: RF46100Fully Automatic load sensing ratchet engagement. Swivel shackle head for unlimited block rotation. Stainless steel shackle head and compatibility with sharp fixing points. Learn More
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Series 40 RTM OrbitBlock,Manual, Single, SwivelSKU: RF46100MNow you can enjoy the flexibility of setting up your fitout exactly to suit yourself. Ronstan is the only company that offers a 40mm ratchet block with both auto and manual engagement models* Learn More
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Series 40 Ratchet Orbit Block Single, AutoSKU: RF46101Now you can enjoy the flexibility of setting up your fitout exactly to suit yourself. Ronstan is the only company that offers a 40mm ratchet block with both auto and manual engagement models* Learn More
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Series 40 Ratchet Orbit Block Single, ManualSKU: RF46102Manual modes allow the ratchet mechanism to be switched on or off as required. This is the preferred mainsheet set-up for many top sailors. Learn More
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Series 40 RTA OrbitBlock,Cheek,Clockwise RotationSKU: RF46151Clockwise rotation. Fully automatic, load sensing ratchet engagement. Recessed underside to suit curved mounting surface. Low mounting points for maximum strength Learn More
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Series 40 RTA OrbitBlock, Cheek, Anti-Clockwise RotationSKU: RF46151AAnti-clockwise rotation. Fully automatic, load sensing ratchet engagement. Recessed underside to suit curved mounting surface. Low mounting points for maximum strength Learn More