HeroNeo&reg; 3PC Ti Rigid Screw Extractor Set Easy Out Removal Broke Bolts Screws Drill Bits Application: suitable for electric tools with chucks or adapters, suitable for hard to remove the screws or have bad nut wood or wood floors on the screw. Designed to remove stubborn, rusted, stripped, screws or bolts, even factory installed carriage type bolts with no slots to remove from. Specification: 1# (no.6+8), 2# (no.8+10), 3# (no.10+14) Length:4.8~4.9cm/1.89"~1.93"(approx) Surface treatment: Ti titanium coated