Brass & Alloy Interscrews are available in various sizes including extensions from our warehouse. We are currently offering the five sizes as below in Brass. Please note that the shaft of the larger interscrews are actually Aluminum with brass screw ends. These are supplied complete units in packs of 10. The popular sizes that we stock are 6mm, 12mm, 19mm, 25mm & 50mm. For further information regarding interscrews please contact us!