Cylinders are manufactured by graded cast iron with OEM specifications and dimensions. Cylinders are available in all range for Aircooled and watercooled compressors. 2 ) Cylinders are perfectly bored & honed on vertical boring machine and honing machine with all correct & permissible tolerances. Top/Bottom surfaces are duly ground & drilled with proper fixtures to ensure proper assembly with related parts. 3 ) The length & bore of cylinder is properly maintained as per OEM for correct stroke & flow of Air/Gas & performance of unit.