Neuma 4 MODUS Solid Brass 38mmNeuma 4 MODUS with solid brass 38mm grip This is our 2nd Generation Neuma 4 with these changes: IMPROVED MECHANISM 3 Stroke Length Options 4 Stroke Profiles Included Interoperable with First Generation Improved Stability User changeable No Tools Required IMPROVED FUNCTIONALITY Oversized Adjuster 9mm Range of Depth Maximum Needle Extension (for maximum throw) Full Needle Retraction (for minimum throw) Enlarged RCA opening Compatible with First