The Karver KBO Foot block range takes the size and weight advantages of the KBO lash blocks and adapts them for bolting to the deck. From the KBO2 to KBO8, the footblock is secured to the deck with a single bolt (included) through the centre of the block and two recessed pins at the back of the block prevent rotation. The cheeks are made from plastic & fibre and the central roller bearings are Peek.