The Spline-Drive Combination Spanner by STAHLWILLE is a premium, German-made imperial wrench (Spline size 10 – 5/16″, length 115 mm, model 40582020) engineered for precision and durability. Its special manufacturing process enables thin-walled rings, making it ideal for hard-to-reach areas. The Spline-Drive profile distributes force evenly across the flanks of bolts and nuts, reducing the risk of edge damage. A double-T profile construction provides outstanding flexural strength, while the distinctive STAHLWILLE rounded finish ensures a secure, comfortable grip—even when working with oily hands. Crafted from HPQ® high-performance steel, this wrench delivers exceptional reliability and long service life.








