Ercolina Notcher Roller - EN100, 1-3/4" Tube Go to amazon.com Related posts How to find the best tube notcher for 2022? FeatureFor use with 1-3/4" Tube (1.75" OD)Pressed in bushings reduce vibration and improve notch qualityPatented quick change roller systemCrowned design aids belt trackingFits Ercolina EN100 Notcher DescriptionErcolina Notcher Roller, EN100, 1-3/4" Tube