The Roll N Lock from Climbing Technology is a seriously cool bit gear. It has so many uses you will wonder what you did without one! Check out the video below and buy yourself a great little piece of engineering.
Ultra-light pulley / rope clamp (only 80 g!) designed for work, rope climbing maneuvers, rescue and self-rescue situations.
for use with ropes EN 892 / EN 1891 Ø 8 ÷ 13 mm;
spring operated cam for use as a rope ascender (fig. 1);
sliding lock for use as a pulley (fig. 2);
it allows the hauling of light loads (fig. 3);
exceptional use with webbing 10÷16 mm, for positioning adjastement (fig. 4);
developed to work also on wet or dirty ropes.