Dick Schirado has created motion-activated watering systems for cattle and other gadgets to make farm/ranch life easier, but says the real challenge is convincing others to bring his work to market.

The pressure generated by hand-powered grease guns, for the most part, is dependent on the strength of the person operating it. “It takes a strong guy to produce 5,000 psi with a normal grease gun,” ...

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Altogether, there are seven grease gun options at Harbor Freight. Prices range from $14.99 for the hand-operated Mini Grease Gun kit, up to $139.99 for the Hercules cordless grease gun — however, ...