40mm or 1.50in ID Mounting Blocks S8038P02S8038P02 Size: 40mm /1.5″ Compatible With: Air Bushings, Metric S304002 – 40mm I.D. Compatible With: Air Bushings, English S303801 – 1.50″ I.D. Specifications Engineering Drawings Units: US METRIC Title Specifications SKU S8038P02S8038P02 Attachments: S8038P02.pdfS8038P02.step