Notchless carabiners are great, but until the Smooth showed up, they"ve all been well over 50gm and very old school * 43g * The Smooth Straight and Bent Gates weigh in at 40gm each making for a very light and very smooth clipping experience Beautifully forged with smooth lines and a smooth gate action * The notchless gate makes for easy clipping and snag-free operation