Product Description: This versatile belay/rappel device has an assisted braking design for secure catches and smooth rope feeding. The Bulletproof carabiner has a steel insert that lasts longer than aluminum. It offers good braking performance, yet you can pay out rope fast to keep up with the leader by holding the device open with your thumb. With a steel insert at the apex and an internal spring bar to prevent carabiner from twisting, the innovative and robust Edelrid HMS Bulletproof Screw FG carabiner is ideal for use with belay devices. Features: High braking performance assists the belayer with leader falls Rope can be paid out faster to a leader by holding device in the 'open&'; position with the thumb Small eyelet for releasing unit with a carabiner when bringing up your partner Robust solid stainless steel construction Suitable for ropes with a diameter of 7.8 to 10.0 mm Small eyelet for releasing unit with a carabiner when bringing up your partner For belaying a leader or bringing up 2 seconds, also suitable for abseiling High braking performance assists the belayer with leader falls