VEVOR Grease Pump, 50:1 Pressure Ratio Air Operated Grease Pump with 13 ft High Pressure Hose and Grease Gun, Pneumatic Grease Pump with Barrel Cap, Portable Lubrication Grease Pump 360° Gun Head

Yes, you can use this on a standard 5 gallon bucket of grease.

It will pump 000 grease.

We do not sell parts separately. All our products have a 12 month warranty and if there is a problem with your purchase during the warranty period, we will send you a replacement part free of charge(Except for consumables, they need to be purchased by you yourself). Please click the following link to contact us: https://www.vevor.com/pages/contact-us.