Wera nine piece 3950 PKL/9 Stainless Metric Hex Key set is designed to keep rust at bay. Wera’s Stainless tool line is manufactured from 100 per cent Stainless steel, preventing extraneous rust caused by use of conventional carbon steel tools contaminating stainless fasteners. Wera’s vacuum ice-hardened process gives the necessary hardness for industrial applications and service life. Hex-Plus technology extends the life of Hexagon sockets. Wera Hex-Plus technology prevents the damaging of screws normally caused by sharp edges of conventional tools rounding the screw head during high torque. Hex-Plus tools provide more surface contact transferring up to 20 per cent more torque with a better load spread. features ballpoint on long-arm of L-key to insert the tool quickly into screw and work up to angles of 15 degrees in confined spaces. Wera’s non-wearing material ensures L-keys stay fixed even after frequent removal from the clip. Handy fold-over clip with sliding switch opens easy for quick insert and removal of tools. Each L-key is laser engraved with the size of each tool for easy locating. Set contains nine Hex-Plus Stainless L-keys - 1.5 mm, 2 mm, 2.5 mm, 3 mm, 4 mm, 5 mm, 6 mm, 8 mm, 10 mm. and Stainless Industrial Tools.