Our Key Steel is sold in 305mm lengths and is available in Carbon and Stainless grade to ASTM A108 and DIN 6880 with sizes ranging from: Zinc Plated Carbon Metric: 4mm x 4mm x305mm – 36mm x 20 x 305mm Imperial: 1/8” x 1/8” x 12” – 1 ¼” – 1 ¼” x 12” Stainless Metric: 4mm x 4mm x 305 mm – 14mm x 14mm x 305mm Imperial: 1/8” x 1/8” x 12” – ¾”x ¾” x 12”