The body is made of aluminum alloy, obtained by forging and subsequently CNC machined with lightening milling. Hard oxidation was chosen for the surface finish. Weight: 306g. Brake fluid: DOT4. Piston diameter: 19 mm. Lever distance: 18 mm. This pump is recommended for twin-disc systems without an ABS system. The bolts for the brake hose fittings are not present in the kit, they must be purchased separately if the original ones are not compatible. Depending on the motorcycle model, this type of product may not be designed for connection to the motorcycle's electrical wiring for the stop lights and clutch control. This problem can be overcome by purchasing the hydrostop separately.