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.

Harken Carbo T2 Block 57mm Single Ratchamatic

Harken Carbo T2 Block 57mm Ratchamatic *1.5 2167 H2O Sensations

Harken Carbo T2 Block 57mm Ratchamatic *2.0

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.

These smooth-running powerful performers make trimming easy, no matter how hard the wind blows. Carbo Air blocks are made of tough reinforced composite in a size and style to fit any system: singles, doubles, triples; soft and hard attach. Perfect for main, jib and spinnaker sheets on dinghies and sportboats; control lines on boats of all sizes. Lightweight, strong and reliable...

Harken Carbo Block 57mm Ratchets Cheek Carbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing.

Ronstan Block 30mm Single Swivel

Harken Carbo T2 Block 57mm Single Ratchamatic

Allen 20mm Dynamic Block Double with Becket