The Antal Barber Block is a snatch block with a “ring” head, it provides an immediate entry of the sheet (the cheek plate revolves around the sheave axle allowing the block to open) and an easy 2:1 control (a line through the ring allows the control of the block height). A safety ball prevents the revolving from accidental opening and an adjustable screw can set the ball in fully locked position. A small becket to attach a line for hanging the block is present. Rubber covers to protect the deck from bumps. Aluminium sheave with composite fibre bushing and two side ball bearings.