Blades made of high carbon hard chrome plated steel to keep that sharp edge longer. Forged steel design for greater strength and durability. Handles are made of aluminum to keep the weight down and the built in rubber bumpers and great hand grips reduce shock load to make it easier on your wrists and hands. The weight is just 830g, overall length is 50cm and they will cut material up to 40mm in diameter. Cutting blades are replaceable.