The JETECH Flex Head Gear Spanner is made of chrome-vandium alloy steel to acquire higher torsion and long lasting precision use. Flexible ratcheting head makes it easy to get into tight spaces. Ideal for the professional tradesperson, it comes equipped with a gearing mechanism that allows for a ratchet approach to the fasteing and loosening of nuts and bolts. The flexible head allows it to work in tight and hard to access areas where a ratchet and socket will not fit.