The Classic is, well, a classic. A perfect and simple shape designed for maximum strength, ease of use and extreme affordability. The assymetrical D series is available in straight and bent gate versions. Specs: Straight Gate: Strengths: Major Axis (24 kN), Minor Axis (8 kN), Open (7 kN) Weight: 54 grams Gate Opening: 17 mm Material: Aluminum Bent Gate: Strengths: Major Axis (24 kN), Minor Axis (8 kN), Open (7 kN) Weight: 54 grams Gate Opening: 21 mm Material: Aluminum