THE AMEC 20831-1500 IS A C SERIES INDEXABLE SPADE DRILL WITH A 12-1/2" OVERALL LENGTH (OAL). IT FEATURES AN 8-1/2" FLUTE LENGTH AND AN 8-51/64" HP REFERENCE LENGTH. THE TOOL UTILIZES A LATHE SHANK TYPE WITH A 4" SHANK LENGTH AND A 1-1/2" SHANK DIAMETER. THIS DRILL IS DESIGNED FOR A DIAMETER RANGE OF 1-1/2" (MINIMUM) TO 2-3/8" (MAXIMUM). IT HAS A STRAIGHT FLUTE TYPE AND IS CATEGORIZED AS A STANDARD LENGTH TYPE, EXPLICITLY NOTED AS 'NO' FOR DEEP HOLE APPLICATIONS. THE DRILL HAS A PIPE TAP SIDE MEASUREMENT OF 1/4".