CTA Tools 2020   Piston Ring Compressor Set Works Either Parallel or Perpendicular to the Cylinder Block Includes Ratcheting Pliers Includes 6 Sizes of 1.5 Inches Wide Compressor Bands Installs Piston Rings From 2-7/8 to 4-3/8 Inches or 73-111 Millimeters CTA Tools Offers One of the Widest Ranges of Professional Specialty Tools in the Market