Kevlar Cam Cleat MidiManufactured from a composite Kevlar/Zytal material, this advanced material offers performance advantages over carbon fiber and conventional glass-reinforced resins; &';K&'; cams are very strong, lightweight, and have excellent wear resistance. A progressive tooth design ensures maximum holding power on all types of lines while maintaining minimum wear to both cam and line.Specifications: Max Line ;: 6 mm - 12 mm (0.4 - 0.55 inches) Fastenings ;: 5 mm (0.20 in.) Fastenings Center: 40 mm (1.57 in.) Holding Power: 230 kg (507.1 lbs) Weight: 34 kg (74.96 lbs)