BST 1200es / Tip Replacement Kit Stratasys Sale! from 12100 /per Build Version 7.x Build 3000 and Higher Version 7.x Build 2000 and Lower 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: 540-10101 Tweet Tip compatibility is determined by build number. The build number can be found through the Printer Services tab in Catalyst.