3 Gallon Poly Heavy Duty Sprayer, 18 in Extension, 36 in Hose no checkout 9 16 in magnets Hollow shaft for 9 16 in magnets Hollow shaft for driving nuts deep onto 1 4 in Quick installing pins work as convenient reference points to level flange for tack and weld out no tools needed Features acme threads for maximum clamping power and hardened steel for long lasting use Delivers 40% more pump volume per stroke Wide mouth opening for easy filling and cleaning Built in relief valve and pressure gauge Shut off has lock on feature for continuous spraying SureSpray® in tank anti clog filter prevents debris from entering the hose shut off and nozzle