Dryade blocks are made in a wide variety of sizes accepting sheaves of diameters from 30 to 160 mm in standard series. The technical and marine shells, in noble wood of various species, are worked in coffee bean form and curved on the inside of the cheeks so that the rigging can be passed easily while keeping chaffing to a minimum. Sharp angles are eliminated in order to lend softness to the forms and to guarantee long varnish life. The finished shells are protected by multiple coats of standard varnish.

Novation range N
The shells are varnished element by element and then assembled by bronze screws on cup point washers and flexible fastening so as to allow thorough maintenance of all components.

Tradition range T
The elements making up the shells (cheeks, spacers and any partitions) are glued and copper riveted. Once assembled, the shells are flower sand-finished and then varnished.

Various heads are available for fitting the Cupro-nickel-aluminium bronze straps.

The simple friction sheaves roll on their stainless steel tin by means of Ertalyte bearings (standard use) or Torlon bearings (heavy radial loads)
The technical sheaves are rotated by rollers providing at one and the same time a low friction coefficient and high radial loads.