The Twing block showcases a side opening mechanism that is spring loaded, allowing for effortless rigging with just one hand, even when wearing sailing gloves. The sideplates of the block are made of black anodized aluminum and are equipped with sturdy bumpers to safeguard the block, topsides, and deck. The sheave is constructed from aluminum and smoothly rolls on a bearing system that is also utilized in Harken's renowned 2.3T high-load snatch block.