Proline SDS Plus-focus is on holes under 5/8-Inch diameter with the most popular 1/4-Inch diameter. Made in Germany-world renowned for quality of product. Unique carbide geometry will create fast start up and drilling. The modern heat treat and brazing processes assure proper hardness, toughness and durability for tool maximum life. CM9 SDS has a carbide tip for quick penetration. CM9 has reinforced flute geometry; reduces vibration, transfers more impact energy to the cutting face and quickly channels debris. Balance of tip and flute geometry ensures perfectly round holes. This gives an anchor an all-round grip.