Harken Element 6233 is a 45 mm fiddle swivel block from Harken’s value-engineered aluminium block range. Element blocks use forged aluminium sideplates with hardcoat anodising, a composite bearing sheave with journal bearing and stainless-steel axle and attachment hardware. The fiddle layout is intended for compact multi-part tackles where two line paths share one block body. This version also includes an integral becket for terminating the standing end of a purchase. Published specifications include up to 8 mm line, a 700 kg maximum working load and a 1400 kg breaking load. Select the fitting by line size, attachment style and working load, and install fixed versions to suitable supporting structure.