Stahlwille Series 540 Metric Crow-Foot Spanners have a 3/8in Drive and can be used with either socket tools such as extension bars and ratchets, or with torque wrenches. PLEASE NOTE: Ensure the settings on the torque wrench are modified. Manufactured from chrome alloy steel and chrome plated. Made in Germany.Select Option 16 mm24 mm27mm28mm Add to Basket Quantity