Synchro Block 50mm Single Becket With Free-Spin Bearing, 990 Lb Working Load, Fits 1/4 To 3/8 Inch Lines, High-Density Bearing, Traveler Compatible, Built For Efficiency And Smooth Power Transfer, Real Workhorse On Deck

Synchro 50mm Block with Free-Spin Bearing for Halyards
✔️ 50mm block, 990 lb WLL, fits 1/4-3/8 in lines, high-density Free-Spin

These deck-ready Synchro blocks offer smooth power transfer for halyards, mainsheets, mast feet, and traveler systems. They accept 1/4-3/8 in lines and switch between swiveling and fixed shackles for quick deck changes.

✅ 50 mm (2.0 in) sheave diameter for smoother rope flow
✅ Working load limit 990 lb (449 kg) for strong performance
✅ Fits 1/4-3/8 in (6.35-9.53 mm) lines for versatility
✅ Free-Spin high-density bearing reduces axle diameter for efficiency
✅ Self-aligning head prevents line wedging and uneven wear
✅ Switchable swiveling or fixed shackles for setup flexibility
✅ Stainless steel strap enhances strength and life
✅ Traveler compatible for easy deck integration

💡 What is a Synchro block used for in sailboat rigging and how does the Free-Spin bearing boost efficiency? In short, a Synchro block helps route lines smoothly and reduces wear, while the Free-Spin bearing cuts friction to boost overall efficiency. - syn​chro block for sailboat rigging with low friction and smooth power transfer - free-spin bearing reduces axle friction and rope wear - handy swivel or fixed shackles simplify deck setups

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