This makita ezychange hole saw is equipped with quick release pilot drill and core body'. '.strtoupper('t')his not only allows speedy size changes but is also a safer method for the user'. '.strtoupper('m')anufactured from hss bi metal with 8% cobalt and progressive tooth geometry, ensures long service life and high cutting speeds suitable for ferrous and non ferrous metal, stainless steel, aluminium, wood and plastics'. '.strtoupper('e')zychange hole saws can be purchased individually or as a kit designed with the right sizes to suit your trade'. '.strtoupper('c')ompatible with other major manufacturers quick change holesaws'. '.strtoupper('s')pecifications bull diameter 37mm bull working length 44mm features benefits bull allows speedy size changes bull core body bull progressive tooth geometry bull quick release pilot drill