INTBUYING 9.5inches(24cm) Silk Screen Printing Emulsion Scoop Coater Aluminum Coating Tools DIY All metal material scoop coater. Aluminum Coating Tool. More strong and durable. The Length:9.5"(24CM) lay on emulsion and ink on to screen scoop coater is a must-have tool for proper application of all direct liquid emulsions. Our coater is one of the most price competitive and best designed emulsion scoop coaters in the screen printing industry.