With both metric and imperial sizes, this 20 piece set of hexagon keys is the cost effective way of ensuring you always have the correct size hex key for any application. Manufactured from high grade chrome vanadium steel to international standards ISO 2936 an DIN 911, the high quality products are supplied in a tough ABS plastic case for easy storage and selection of tool when on a job. Set supplied with 10 metric sized hex keys and 10 imperial. Features and Benefits • Manufactured from high grade carbon steel • 20 piece set ensures you have the correct size hexagon key to hand for a host of applications • Supplied in a durable ABS plastic case to easily store, organise and transport your products Typical Applications • Ideal for use when fastening or loosening any hex head bolt or screws which are commonly found in furniture and bicycles Standards • ISO 2936 & DIN 911 Notes • Set Contents: • Metric: 1.5, 2, 2.5, 3, 4 , 5, 6, 7, 8 and 10mm • Imperial: 1/16", 5/64", 3/32", 1/8", 5/32", 3/16", 7/32", 1/4", 5/16" and 3/8"