WERA Hex Socket Wrench with Storage 005490 9-Piece Set, 1/2" Drive, Rail, 13-21mm,

Quantity: 9 pieces, Socket total length (mm): 38, Rail size (mm): 30 x 370 Socket rail with 9 impact sockets for use with 12.5mm=1/2” drive electric or pneumatic wrenches. Impactor technology ensures a longer-than-average service life even under extreme requirements. The hexagonal profile used allows for accurate, profile-maintaining screw tightening with high power transmission. The Take it easy tool finder is color-coded by size, making it quick and easy to find the tool you need.