Series 40 Single Block with Loop Head

$ 30.95

Series 40 Single Block with Loop Head

In stock

Product Information

Ronstan Series 40 Single Block with Loop Head.

Ronstan Series 40 All-purpose (AP) block with a loop strap head is a great all-around solution for smaller yachts and other purposes.


  • Self-lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads.
  • These blocks are the right choice for sheets, halyards, and control line applications for cruising and racing.
  • They are ideal for durability and a long service life.
  • Exceptionally high working loads.
  • Self-lubricating sheave.
  • Used for Mainsheet, Halyard & Vang.
  • Also for spinnaker control lines on off-the-beach catamarans, one design classes, and sports boats up to 8m (26ft).


  • Made from U.V. stabilised Acetal sheaves.
  • Impact and U.V. resistant, glass fibre reinforced Nylon cheeks.
  • Grade 316 stainless steel bearing race.
  • Grade 316 stainless steel load strap.


  • Sheave Ø: 40 mm
  • Max. Rope Ø: 10mm
  • M.W.L.: 400 kg
  • B. L.: 1000 kg
  • Weight: 54 g