These strapping/banding tools are used in hose assembly, bundling, and sign mounting. The popular N70-C001 heavy duty production model has a premium tension handle and screw rod for added torque and durability. The more economical N70-C001LD is lighter duty for intermittent, standby use. The N70-C400 portable 'ratchet tool' is designed for fast mounting of signs or light duty banding. The N70-G402 is a larger model designed to be used with strapping up to 1- 1/4". Assembly instruction sheets are included with the tool; installation should be done by a fully trained person.