This 25-piece bolt extractor set removes broken fasteners quickly and easily. Made of high-quality steel, this extractor set is very strong and durable. The complete set is delivered in a sturdy case for easy storage and transportation. Delivery includes 5 drill bits, 5 breaking tools, 10 drilling guides and 5 nuts. Material: Steel Case dimensions: 23 x 18.5 x 5.5 cm (L x W x H) Delivery includes: 5 x Drill bit: 11/32’’ (8.73 mm), 5/16’’ (7.94 mm), 1/4’’ (6.35 mm), 3/16’’ (4.67 mm), 1/8’’ (3.175 mm) 5 x Breaking tool: 1, (length 9.5 cm), 2, (length 8.5 cm), 3, (length 8 cm), 4, (length 7.1 cm), 5, (length 5.6 cm) 10 x Guide: G1 (diameter 9/23-7.14), G2 (diameter 5/16-7.94), G3 (diameter 171/32-8.73), G4 (diameter 3/8-9.53), G5 (diameter 13/32-10.32), G6 (diameter 7/16-11.11), G7 (diameter 15/32-11.91), G8 (diameter 1/2-12.7), G9 (diameter 17/32-13.49), G10 (diameter 9/16-14.29) 5 x Nut: 1, (diameter 1.5 cm), 2, (diameter 1.3 cm), 3, (diameter 1.2 cm), 4, (diameter 1.1 cm), 5,