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.

Harken HR Wire Block 25mm Shackle

Harken Carbo Block 40mm Single Swivel

Harken Carbo Block 57mm Single Swivel Ratchamatic 1.0

Harken Carbo 57mm Single Ratchamatic Swivel Block 15:1

Harken Carbo Block 57mm Single Swivel Ratchamatic*2.0

Harken Carbo Block 57mm Single Swivel Ratchamatic*2.0 HTE

Harken Carbo 57mm Single Ratchamatic Swivel Block *1.5 HTE

Harken Carbo Block 57mm Single Swivel Ratchamatic *1.0 HTE

Carbo ratchet blocks allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. Nylon resin sideplates are densely packed with long-glass fibers for a compact block with a high strength-to-weight ratio. Machined aluminum sheaves are hardcoat anodized for strength and corrosion resistance. Eight facets hold line securely. Ball...

Harken Carbo 57mm Ratchets Swivel Block Red

Ronstan Block 40mm Swivel