Wera Hex Plus 950 SPKL/9 SZ Multicolor SAE Hex Key Set with Storage Pouch. Hex Key set is designed with Hex-Plus technology to extend the life of Hexagon sockets. Wera Hex-Plus technology prevents the rounding of screws caused by sharp edges of conventional tools gradually wearing the screw head. Wera 9 Piece Imperial Allen Hex Key Set Wera Hex Plus 950 SPKL/9 SZ Multicolor SAE Hex Key Set with Storage Pouch. Hex Key set is designed with Hex-Plus technology to extend the life of Hexagon sockets. Wera Hex-Plus technology prevents the rounding of screws caused by sharp edges of conventional tools gradually wearing the screw head. Hex-Plus tools provide more surface contact transferring up to 20% more torque. Finger protection rubber sleeve with easy-to-grip material ensures comfortable and safe working. Features ballpoint on long-arm of L-key to insert the tool quickly into screw and work at an angle in confined spaces. Comes with: 9 Hex-Plus L-keys :