Slip-Torque® conveyor technology is unique in its ability to have re-locatable "holes" (square and rectangular) opened in the roller surface to enable various operations initiating below the conveyor surface to take place through the conveyor surface. Examples include bar code scanning, clamping, positioning, label application, etc. Specialized tooling can also lift products off the conveyor surface for processing and bracing. Lift and Rotate devices operate through a conveyor surface hole.