Hole saws for 1/2" through 4" conduit sizes | High-impact, rugged plastic carrying caseAmazon.ca Product Description Greenlee carries several electrician’s kits providing an assortment of the most commonly used Greenlee variable pitch hole saw sizes and arbors. High-impact, rugged plastic carrying case. From the Manufacturer Greenlee carries several electrician’s kits providing an assortment of the most commonly used Greenlee variable pitch hole saw sizes and arbors. High-impact, rugged plastic carrying case.