Block-out is an excellent base mold release compound, designed to be used as a base mold coating to allow for easy separation of paraffin from the base mold. Helps to prevent paraffin build-up on metal base molds. 150mL Bottle, sold individually. NOTICE: Due to supply chain disruptions from the COVID-19 pandemic, there is limited availability to the small pump sprayers used to dispense this product. As a result, this product will only ship with one sprayer per case when ordered in case quantity. Please contact Customer Service if you will need more than one pump sprayer.