Racing Micros With Becket. The becket holds the end of the rope under the cleat. No need for an extra fixing when rigging for 2:1 advantage. Small, neat and lightweight. Advanced tooth technology to hold all types of small rope. The C270A is used on Laser tillers to give a 4:1 advantage without using a pulley block. C270A has a hard anodised finish to give a hard wearing surface.