SAILSetc design and manufacture. A beautifully simple design of block - simply designed better - that allows real versatility in use. The sheave is a stainless steel ball race and the block has the lowest friction of all the similar items we have tested. This is the larger of two otherwise identical items and can be used for radio yachts from IOM to A Class (and even larger) size. Suitable for Dyneema line from 30 kg up to 110 kg breaking strain. It can be dismantled and maintained with no danger to the bearing. This block can be used in two principal ways. One way is by suspending it on a line of Dyneema or Dacron. The other way is to fix it to a surface using bolts or screws. Each block is supplied with fasteners
