The Primatech 550A’s pneumatic fastening tools embody the most advanced technical developments in flooring installation. The 550 features the PRIMPACT module, a breakthrough for the industry.  Packed full of innovative features, the reinforced high-strength aluminum head casing offers reliability, extended performance and unequaled smoothness of operation. Close-tolerance parts assembly and a new cylinder design (for reduced wear and quick interchangeability between same generation units) are indeed a great added value for the discriminating user.