Hardware

The 16 mm is Harken’s® smallest block. It is perfect for small synthetic control lines found on high-tech dinghies. The patented bearing system uses stainless steel balls in a captive grooved race. Sheave Ø (mm)16 mm Maximum line Ø (mm)5 mm Maximum working load (kg)204 kg  

Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. Sheave Ø (mm)57 mm Maximum line Ø (mm)10 mm Maximum working load (kg)359 kg

  Sheave Ø (mm)40 mm Maximum line Ø (mm)10 mm Maximum working load (kg)220 kg Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming.

Sheave Ø (mm)40 mm Sheave Ø (in)1 9/16 in Maximum line Ø (mm)10 mm Maximum line Ø (in)3/8 in Maximum working load (kg)440 kg Maximum working load (lb)970 lb   Sheave Ø (mm)40 mm Sheave Ø (in)1 9/16 in Length (mm)94 mm Length (in)3 11/16 in Weight (g)86 g Weight (oz)3.2 oz Shackle pin Ø (mm)5 mm Shackle...

    Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. Sheave Ø (mm)40 mm Maximum line Ø (mm)10 mm Maximum working load (kg)440 kg

Low-friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A range of styles lets these blocks adapt to almost all control line applications. Sheave Ø (mm)29 mm Length (mm)89 mm Weight (g)78 g Shackle pin Ø (mm)5 mm Maximum line Ø (mm)8 mm Maximum working load (kg)181 kg Breaking...

Ronstan 20mm Single Block with Becket   Features: Low friction. High static and dynamic load capacity. Lightweight.   Sheave Ø: 20 mm Max. Rope Ø: 6mm Max working load:  250 kg Breaking load: 550 kg Weight: 18 g

Sheave Ø 20 mm Max. Rope Ø 6 mm Max. Cable Ø - mm Pin Ø 4.0 mm M.W.L. 350 kg B. L. 700 kg Weight 44 g   APPLICATIONS Dinghy control lines Dinghy vangs Cunninghams Traveller controls MATERIALS Stainless Steel ball bearings UV stabilised Acetal sheave Grade 316 Stainless Steel load strap and head fitting Impact and...

Ronstan 20mm Triple Block with becket   Precision moulded Acetal sheaves running on stainless steel or Torlon® ball bearings provide high performance & low friction.   Two-way head - can be fixed at 0 or 90 degrees   Applications: Dinghy control lines. Dinghy vangs. Cunninghams. Traveller controls.   Sheave Ø: 20 mm Max. Rope Ø: 6 mm Pin Ø:...

Ball bearing block.Double, 2-axis shackle head. Sheave Diam. 30 mm Max. Rope Diam. 8 mm Max. Wire Diam. - mm Pin Diam. 5.0 mm Max. Working Load 400 kg Breaking Load 950 kg Weight 78 g Precision moulded Acetal sheaves running on Acetal or Torlon® ball bearings provide high performance & low friction. The 2-stage ball bearing system provides consistent performance...

Ronstan 30mm Single Block with Swivel   Ball Bearing Orbit Blocks™ boast the highest strength-to-weight ratio available. This is achieved through all-composite reinforced polymer materials and multiple attachment options.   Their precision design provides the optimum number of ball bearings for minimum friction while weight reduction is achieved through the use of fibre-reinforced...

Ronstan 30mm Single Block  Ball Bearing Orbit Blocks™ boast the highest strength-to-weight ratio available. This is achieved through all-composite reinforced polymer materials and multiple attachment options.   Their precision design provides the optimum number of ball bearings for minimum friction while weight reduction is achieved through the use of fibre-reinforced composites...

RONSTAN RF40101 SERIES 40 BB BLOCK - SINGLE LOOP TOP - SERIES 20 BALL BEARING BLOCKSRONSTAN'S BALL BEARING (BB) BLOCKS ARE A GREAT ALL AROUND SOLUTION. BALL BEARING BLOCKS HAVE BEEN CONCEIVED AND ENGEERED FOR THE DEMANDS OF COMPETATIVE SAILING. USED ON BOATS OF ALL SIZES FOR SHEET, FINE TUNE AND CONTROL LINE APPLICATIONS. THEY UTILISE A HIGHELY EFFICIENT, LOW FRICTION BEARING SYSTEM FOR OPTIMIM SHEETING...

Ronstan RF42110To up to 8mm line and has a 40mm roller bearing sheave . Shackle Head   Break load 500kg Ronstan RF42110

RWO R491 double kicker block with cleat