Harken 128 38mm Big Bullet Double Block with Becket

The Harken 128 is a 38mm Big Bullet Double Block with Becket, purpose-built for small dinghy sailing and versatile control line applications on larger vessels. Low-friction design routes lines aft with minimal resistance, delivering fast, responsive trim and release performance under both high and low loads.

Big Bullet blocks feature large 1-1/2" (38mm) sheaves that accept up to 3/8" line and provide exceptionally free-rolling action. Stainless steel sideplates offer corrosion resistance and long-term durability, while Delrin® ball bearings keep friction to a minimum for smooth, reliable operation in demanding conditions.

Key Features:

• Double block configuration with integrated becket for multi-purchase rigging systems
• 38mm (1-1/2") sheave diameter accommodates up to 3/8" (10mm) line
• 600 lb (272 kg) maximum working load
• Stainless steel sideplates for superior corrosion resistance
• Delrin® ball bearings for low-friction, free-rolling performance
• Shackle pin diameter: 3/16"
• Block length: 4-1/2"

Ideal for outhauls, vangs, cunninghams, traveler controls, furling lines, and flag halyards, as well as main, jib, and spinnaker sheets on small dinghies. The becket attachment allows a line to be fixed directly to the block, enabling efficient multi-part purchase systems for mechanical advantage in a compact, lightweight package.