THE ALORIS DA 55 IS A MORSE TAPER HOLDER IDENTIFIED BY PART NUMBER DA55. THIS HOLDER IS SPECIFIED WITH A #5MT MORSE TAPER HOLE SIZE AND INCLUDES A COLLIS 60654 5X4MT SLEEVE. KEY DIMENSIONS INCLUDE A 1-5/8” CENTERLINE, A 3-1/4” OVERALL HEIGHT, A LENGTH OF 5-1/2", AND A WIDTH OF 3-1/4". THE ASSOCIATED SLEEVE SUPPORTS A 1 – 1.5” DIAMETER, 2 FLUTE DRILL WITH A 6.5” FLUTE LENGTH.