Timing Pulley, XL Profile, This precision timing pulley is designed as a general purpose replacement to machined tools. XL Profile, Additional Features: Made of Aluminum XL PROFILE - 22 TEETH - 3/8" BELT WIDTH - 5/1" BORE - HUB-2 FLANGES-AL [22XL03-5/1FA \ TIMPUL], 22 Tooth Count, vending machines, sewing machines, copiers, and many other precision mechanisms, 35'', Aluminum: Industrial & Scientific. This pulley has a profile of XL and has 22 teeth. hand power tools, robotics, Timing Pulley, 22 Tooth Count, Phoenix Mfg, Phoenix Mfg, Aluminum: Industrial & Scientific. The inside diameter is 5/1'' and it has a belt width of 0.