Ronstan Series 50 Blocks -single, universal head with becket

$ 70.95

Ronstan Series 50 Blocks -Single Block with Becket and Universal Head

In stock

Product Information

Ronstan Series 50 Blocks -single sheave with universal head and becket

Series 50 All Purpose Single Block with Becket and Universal Head.

This All-purpose (AP) block is a great all-around solution.

Self-lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads.

Ideal for durability and long service life

These blocks are the right choice for sheets, halyards, and control line applications for cruising and racing.

Ideal for 8mm to 12mm rope.


  • Captive Lock universal head can be fixed in either of two planes, or free to swivel as required.
  • The becket pin is removable so the line can be spliced before fitting and is ingeniously locked into position without the use of a clevis pin, split ring, or tools. Used for Mainsheet and halyard applications, vang and spinnaker control lines on boats to 10m.
  • Exceptionally high working loads.
  • Low maintenance, long service life. Self-lubricating Acetal polymer sheave ensures low friction and extreme durability.
  • Slotted pin shackle eliminates fouled lines.
  • Snap fit removable becket pin.


  • Made from Marine Grade 316 stainless steel load strap and head fitting
  • Impact and UV-resistant, fibre reinforced Nylon cheeks.
  • Captive Lock universal head.
  • Slotted pin shackle eliminates fouled lines.
  • Snap fit removable becket pin.


  • Sheave ?: 50mm
  • Rope ?: up to 12mm-12mm
  • Pin ?: 5.0mm
  • Weight: 134gm
  • B.L: 1500kg