THE ALORIS DA 55 MORSE TAPER HOLDER IS A PIECE OF TOOLING EQUIPMENT WITH A PART NUMBER OF DA55. IT FEATURES A #5MT TAPER HOLE SIZE. THE PHYSICAL SPECIFICATIONS INCLUDE A CENTERLINE MEASUREMENT OF 1-5/8 INCHES, AN OVERALL HEIGHT OF 3-1/4 INCHES, A LENGTH OF 5-1/2 INCHES, AND A WIDTH OF 3-1/4 INCHES.