The Allen DB 20mm Dynamic 4 Sheave Deck Organiser is specifically designed for efficiently routing control lines and halyards along the deck or coach roof of your boat. Crafted from marine grade aluminium and anodised in black, the cheeks are durable and reliable. The package includes four bolts, nuts, and washers, and the non-sheave column can also function as a becket. With the ability to stack and create a double height configuration, the upper organiser can withstand two-thirds of the maximum working and breaking load. The "DB" in the name stands for Dynamic Bearing, which refers to the patented bearing system developed by Allen. This system features twin rows of stainless steel ball bearings on a stainless steel axle, offering high rolling speeds and minimal friction for smooth movement of rope around the sheave. The DB deck organiser is ideal for sportsboats up to 28ft, with its dynamic bearing technology allowing for quick sheave movement. It is also a