EUREKA: Outer Dimension: 4.45" x 2.9" Pear shaped cold forged aluminum auto-locking carabiner with a generous opening. Perfect for belaying and a variety of tactical and climbing uses. Spring loaded auto locking gate is easy to use with one hand and locks as soon as its released. Meets EN 362:2004:2004 standards. Available in red color. MBS: 28 kN