The 00-25 Seasure 25mm Double Block with V-Jammer is ideal for control line systems on dinghies when used with the sea sure single block with becket (3:1) or a plain double block (4:1). The "00" range offers an unparalleled range of control line configuration opportunities.
Their classic design has stood the test of time. The high strength to weight ratio and simple construction gives years of trouble free service. You will often find them in use after more than 30 years! They feature hollow rivets for lightness and tough plastic sheaves that provide a good bearing surface allowing easy rotation under a range of load conditions. The robust electro-polished 316 stainless steel construction also gives a high chafe resistance should any feed or take-off misalignment occur.