Check the listing for details. Stahlwille Double Flat Ring Metric 19 x 22 mm. Condition: New. Listed at 32.02 USD. Untitled Document Stahlwille Double Flat Ring Metric 19 x 22 mm NB: This Sale is for a 19 x 22 mm Wrench the picture shows 22x20mm for information only. Superb German manufactured Double flat Ring STAHLWILLE AS DRIVE The Ring end is designed to transmit force onto the lands of the fastening thus avoiding rounding off of fasteners. See Picture on left. Drop forged from the very best steels to ensure the closest tolerances and sizing. The double-T profile ensures that the wrench even though slim will not bend in normal usage. The chromium plating is superb...the wrench is firstly cleaned thoroughly and then Nickel plated before chromium plate is applied ensuring no chance of peeling taking place. L: 210mm, a: 9mm, d1: 27.6mm, d2: 32.4mm, Weight 109 Grams.