Dust Collection Clamp

The dust collection system I have needs a 105mm clamp, the local hardware store only had 100mm or 150mm and they aren't very good. It uses a 6cm tech screw for clamping, its 105mm in diameter and tightens up nicely on the hoses here. It has a relief to allow the wire of the hose to pass underneath and a filleted internal surface to protect the thin plastic hose.