Astra TX "large" Steco-System-Technik GmbH & Co. KG Sale! from 5350 /per Qty. Add to Cart Description Description pack of 5 (Titanium Guide Sleeve D 6.70 / d 5.70 / L 4) Titanium guide sleeve compatible with ASTRA TECH ™ Implant System TX large D6.7 / d5.7 / L4.0 for “full guided” drilling templates, sleeves with lateral surfaces and retention groove SKU: M.27.15.D570 Tweet