Blocks - Double

Lightweight Highest working load in its class Secure, versatile attachment Low profile and compact Ultra low profile thru-sheave becket Low friction 2-stage ball bearing system provides consistent performance over the full working load range. SP...

Lightweight Highest working load in its class Secure, versatile attachment Low profile and compact Ultra low profile thru-sheave becket Low friction 2-stage ball bearing system provides consistent performance over the full working load range. SP...

Lightweight Highest working load in its class Secure, versatile attachment Low profile and compact Ultra low profile thru-sheave becket Low friction 2-stage ball bearing system provides consistent performance over the full working load range. SP...

304 grade stainless steel cheek block with double, brass bushed nylon sheaves. Swivelling bale head. Heavy construction for commercial applications. Part NumberSheave DiameterMaximum Rope DiameterLength (A)Width (B)Sheave Width (C)Swivel Diameter...

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. Note: DO NOT use Harken...

Ronstan's Ball Bearing Orbit Block is a lightweight, high performance range of blocks featuring the proven Ronstan 2-stage bearing system. Applications: Mainsheet systems and spinnaker sheets on dinghies to 5m (16ft) Halyard, vang and backstay...

The Carbo Ratchamatic is a load-sensing ratchet block that rolls freely in both directions under low loads and automatically engages the ratchet as loads increase. Shifting between ratchet and light-air modes is seamless. Use the 2634 with a 402 or 403...

T2 blocks come in single and double configurations and can be tied, spliced, or lashed to almost anything. T2 doubles feature composite line guides that are integrated into the block head. They prevent the block from capsizing by pushing the lashing line...

T2 blocks come in single and double configurations and can be tied, spliced, or lashed to almost anything. T2 doubles feature composite line guides that are integrated into the block head. They prevent the block from capsizing by pushing the lashing line...

T2 blocks come in single and double configurations and can be tied, spliced, or lashed to almost anything. T2 doubles feature composite line guides that are integrated into the block head. They prevent the block from capsizing by pushing the lashing line...

T2 blocks come in single and double configurations and can be tied, spliced, or lashed to almost anything. T2 doubles feature composite line guides that are integrated into the block head. They prevent the block from capsizing by pushing the lashing line...

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 Features high static and dynamic load capacity light weight. versatile head...

This Ronstan double block features precision-moulded UV-stabilised Acetal sheaves running on stainless steel or Torlon® ball bearings providing high performance and low friction.  Impact and UV resistant with fibre reinforced Nylon cheeks...

Ronstan's All Purpose (AP) blocks are a great all-round solution. With Acetal polymer sheaves this double block with swivel and becket is available in 2 sizes. Features: 316 Stainless Steel polished bearing races, load straps and...

Ronstan's All Purpose (AP) blocks are a great all-round solution. With Acetal polymer sheaves this double block with swivel is available in 2 sizes. Features: 316 Stainless Steel polished bearing races, load straps and head Universal...

Midrange block robust construction makes them ideal to handle the high loads found on medium and large offshore boats. Sheave runs exclusively on a ball bearing system for fast trim and release under any load. Note: DO NOT use Harken equipment for...

Mid range blocks robust construction makes them ideal to handle the high loads found on medium and large offshore boats. Sheave runs exclusively on a ball bearing system for fast trim and release under any load. Note: DO NOT use Harken equipment...

Low-friction Micro blocks are compact and lightweight. They are ideal for sailboards, smaller dinghies, and lightly loaded control lines on boats of all sizes. Note: DO NOT use Harken equipment for human suspension unless product is specifically...

Low-friction Micro blocks are compact and lightweight. They are ideal for sailboards, smaller dinghies, and lightly loaded control lines on boats of all sizes. Note: DO NOT use Harken equipment for human suspension unless product is specifically...

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. Note: DO NOT use Harken equipment for human...