Ink Damper Nuts & O'rings, 4mm x 3mm or 3mm x 2mm sizes. Fit DX4, DX5 , DX7 & many printer printheads. Complete printer maintenance or printer repairs with our ink damper nuts & o'rings. Set of 5pcs.Ink Damper Nuts O'rings$5.00PriceSizeSelectQuantityADD TO CART