CAD $25.00 Simple manual pump sprayer used to flush out drill holes or spray liquids.To modify for grouting, just cut the spray wand off and tape an 18 inch length of 1/4" rigid plastic air line you can get at any location that sells air lines for tractor trailors. You might check tractor trailer repair garages as well. A length of metal automotive brake line can work as well. ...click to read more & view availability...