Cut Down-Time and Power Consumption. Extend Belt, Pulley and Motor Life. Cut Down-Time and Power Consumption. Extend Coupling, Bearing, and Motor Life. Cut Down-Time and Power Consumption. Extend Felt, Wire, Bearing and Roll Cover Life. Improve Drive Effeciency and Lower Overall Vibration. 13 Sizes in Stainless Steel, Brass, or Copper. Speeds up the Alignment Process. Copyright © GSI,  All rights reserved.