Pulley: Nylon two part 20 mm diameter with central hole of 4.00mm. Pk/10 (TS0203)
      
      Nylon pulley, two part 20 mm diameter with central hole of 4.00mm. Pk/10 
Each has a central hole measuring 4.00mm diameter. Our Nylon bushes fit this item thus allowing various shaft sizes to be fitted.
The two halves of the pulley are pressed together so that the spigots interlock.
This friction fit suits most uses, however the two haves may be fixed in a permanent manner with the application ofa 'super glue'. (Cynoacrylate adhesive)