Comparison : Item # DHS-06-90012993, Model "DHS" Series Hospital Grade Spark Arresting Disk Silencers
Item # DHS-08-90012994, Model "DHS" Series Hospital Grade Spark Arresting Disk Silencers
Item # DHS-10-90012995, Model "DHS" Series Hospital Grade Spark Arresting Disk Silencers
Item # DHS-12-90012996, Model "DHS" Series Hospital Grade Spark Arresting Disk Silencers
Item # DHS-14-90012997, Model "DHS" Series Hospital Grade Spark Arresting Disk Silencers