SR-20 Support Canister / Fortus Classic Stratasys Sale! from 38000 /per Qty. Add to Cart This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. SKU: 310-30500 Tweet SR-20 support material is water-soluble for easy, hands-free removal. Easily produce intricate prototypes and models without the need for time-consuming manual support removal.