2No engineers on site for up to 2 hours De-sludge up to 2000gExtra high pressure jetter on site for up to an hour 1No 10b2 chain 1No Top Sprocket1No Bottom Sprocket 1No Grease extender1No Grease brush 1No Chain grease Following on from our recent site visit, our engineer has advised that further works are required on your sewage system.