Secure grip due to strong knurl. Grease gun head made of zinc die casting Z 410. Conveys all high-performance lubricants for the industrial sector and toughest BIO greases up to NLGI 3, grease temperature down to -10 °C. Conventional conveying by means of compression spring is replaced by pneumatic conveying. Susceptibility to failure is reduced to a minimum, no grease gets behind the sleeve. Cartridge performance unchanged after 5000 working cycles. With suspension eye. By means of overpressure and pressure release valve the grease gun can be stored pressure-free. Pneumatic grease delivery into the grease gun head by means of 4 bar air pressure. Precise fit of pump piston and cylinder (no false lubrication). Separate filling and venting valve in the grease gun head.