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CIR shank reference: low- and mid-pressure hammer models, dimensions, air consumption, and why CIR-shank bits pair with hammers across two different pressure classes....
NUMA shank reference: NUMA100–NUMA180 bit diameter and air data, plus why the largest confirmed model uses a Hex 275 shank instead of a NUMA-numbered one....
COP shank reference: COP32–COP84 model range, hammer compatibility, and the one confirmed COP data point in MSD's compatibility records...
MISSION shank reference: M40–M80 bit diameter, air pressure/consumption, rotation data....
Complete QL shank reference: QL40–QL200 bit diameter and air data, hammer compatibility, and the gap in coverage between QL80 and QL200....
Complete SD shank reference: SD4–SD12 bit diameter and air data, hammer compatibility, and why SD10 appears under two different hammer brands....
DHD shank reference guide: DHD3.5–DHD1120 bit diameter ranges, air pressure/consumption data, and cross-brand hammer compatibility (QL/SD/MISSION)....
Discover what makes the best DTH bits — from cold-press button retention to carbide grade selection. Engineering-backed guide with field data from 23+ years of manufacturing....
What makes the best DTH hammer? MSD engineers explain impact energy, air efficiency, build quality indicators, and application-specific selection across all major series....
Learn how pneumatic DTH hammers work, their key components, pressure classes, and series compatibility. MSD engineering guide with 23+ years of field data....