Professional drill bits and extractor set for commercial or occasional use. Left hand drill bit and screw extractor set. Imperial sized drill bits ranging from 5/64in – 19/64in. Perfect for removing broken or damaged studs and fasteners. Designed to remove broken studs, socket screws, and fittings. Spiral flutes are designed to embed themselves deeper into the metal as you turn the tool, so that the fastener resistance increases the extractor grip. Can be used with a spanner, socket, or even a tap holder on the end of each spiral extractor. HSS drill bits for maximum strength and durability. Titanium finished drill bits. Imperial Left handed drill bits. Comes in a metal marked tin for easy storage and transportation. SET INCLUDES THE FOLLOWING: 5 x Imperial Left handed Drill bits – 5/64in, 7/64in, 5/32in, 1/4in and 19/64in. 5 x Spiral extractors - #1, #2, #3, #4 and #5. SPECIFICATIONS: Imperial sized drill bits. Left hand spiral drill bits. Fully ground drill bits. Manufactured from HSS-G. DIN 338. HRC 61-63 Drill Bits. HRC 52-58 Extractors. Titanium finish.