29 mm Harken Carbo Block

The 29 mm Carbo block is like jewelry. This compact block is extremely strong. Use Harken miniature Carbo as a mainsheet block on small dinghies such as the Optimist, or for low- friction control blocks on any size boat.

Doubles and triples feature U- Locks to hold the swivel in front/side position, or to let it spin freely. The triple's compact cam arm supports high- load purchases of 5:1 or 6:1. The line shedding cheek block features a small mounting footprint and drainholes. The low-profile Ti -Lite replaces headpost, shackle, and spring with high- tech line.

40 mm Harken Carbo Block

Use the 40 mm Carbo Airblocks for jib and mainsheet systems on high-performance dinghies. For the ultimate system, use Thecnora®, Dyneema® or Spectra® line with the cover stripped where it runs through the blocks. These blocks are also ideal for highly loaded control lines on small keelboats.

40 mm Harken Carbo Ratchet

These small ratchets are ideal for jib sheets and spinnakers on small dinghies where size and weight are critical. Eight-faceted machined aluminum sheave holds line securely. Harkote anodizing provides durability.

57 & 75 mm Harken Carbo Blocks

The 57 mm & 75 mm Carbo Airblocks® are 60% stronger and 30% lighter than Harken classic blocks. The lightweight 57 mm Carbo has a high load capacity and broad working range. Use for mains and jib sheets on centerboard and keelboats like Lightnings, Dragons, Solings, J/24s, and for catamaran mainsheets. The 75 mm Carbo is the first all-plastic block with a safe working load of 1200 lbs (500 kg). These blocks release easily under load, and save seconds during mark roundings. Perfect for mainsheet systems on sportboats like the Melges 24, J 105 and Henderson 30.

Harken Carbo Ratchamatic

The Carbo Ratchmatic 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 models is seamless. Unloaded main and jib sheets run out freely during mark roundings and asymmetrical spinnakers free instantly during jibes.

Ratchet engagement may be adjusted to a higher or lower load according to strength and sailing style. The Ratchamatic cheek block mounts on either port or starboard. Holding power of 57 mm is as high as 10:1. The 75 mm up to 15:1. For the ultimate system, mount a Ratchamatic on the boom above a cockpit- mounted switchable ratchet to allow the mainsheet to run freely in light air, and ensure double holding power in heavy air.

Harken Carbo Fiddles

Carbo fiddle line features high- load ball bearings with fitted races for low- friction operation. The 40 mm fiddle is an excellent choice for 3:1 and 4:1 tackles on dinghy vangs and mainsheets, as well as for controls such as cunninghams and internal boom outhauls on larger boats. The 57 mm fiddle features the Cam- Lock locking system. The patented switch allows the jaw to lock al 90- degree intervals, or to swivel freely.