THE SHARS 250-301 IS A CXA 1 QUICK CHANGE TOOL POST HOLDER DESIGNED FOR LATHES WITH A SWING RANGE OF 13 TO 18 INCHES. IT ACCOMMODATES TOOL CAPACITIES RANGING FROM 1/2 INCH TO 3/4 INCH. THE HOLDER FEATURES A WEDGE MEASURING 2-1/8 INCHES, WITH OVERALL DIMENSIONS OF 3-1/4 INCHES IN LENGTH, 1-3/8 INCHES IN WIDTH, AND 2-1/8 INCHES IN HEIGHT, EXCLUDING THE MIDDLE SCREW. INCLUDED WITH THE TOOL POST HOLDER IS A KENNAMETAL MDJNR-124B TOOL HOLDER, WHICH HAS A SHANK HEIGHT AND WIDTH OF 19.05 MM, AN F DIMENSION OF 25.4 MM, AND A TOOL LENGTH OF 114.3 MM. THE HEAD LENGTH OF THE TOOL HOLDER IS 35.052 MM, AND IT IS COMPATIBLE WITH DN..432 GAGE INSERTS. THE LOCK PIN ID DRIVE SIZE IS 3/32, AND THE CLAMP SCREW ID DRIVE SIZE IS 1/8.