Solid Drilling - Single Tube System (STS or BTA) Accessories Solid Drilling Main Page Overview Brazed Indexable Accessories Drill tubes, Pressure heads, Stationary and Rotating Drill Tube Guides, Drill Tube Drivers, Drill Bushings, Coolant Pumping and Filtration Systems, Cross Hole Adapters, Chip Handling Equipment   American Heller offers a wide variety of accessories. Click the or icons for more info. Description/Application Size Range More Info? Special Cross Hole Drill Used in the mold drilling industry to drill across cross holes. These tools combine any of the brazed tools listed above with a cross hole adapter into a single drill. Call for availability ©2011 American Heller Corp. All rights reserved.