Part numbers in this series
Part No. 18XL037, 22XL037, 28XL037, 11XL037, 12XL037, 14XL037, 15XL037, 16XL037, 20XL037, 21XL037, 24XL037, 30XL037, 32XL037, 36XL037, 40XL037, 42XL037, 44XL037, 48XL037, 60XL037, 72XL037
Drawing from the Amec timing pulley catalog, page G-2. Need full dimensions? Request specs and we send the catalog table.