KOOPOOL Mini Grease Gun Kit 4500 PSI — Compact Pistol-Grip with 6-Jaw Locking Coupler & Needle Nozzle

The KOOPOOL Mini Grease Gun Kit is a compact, high-pressure lubrication tool (up to 4500 PSI) that includes a detachable needle nozzle and multiple couplers for precise, hands-free greasing of hard-to-reach fittings.

Compact yet powerful, this mini grease gun is engineered for mechanics, DIYers, and maintenance pros who need reliable grease delivery in tight spaces. Built with a die-cast aluminum head, high-strength spring, and a pistol-grip for one-handed operation, the kit arrives ready to use with a grease cartridge, flexible hose, rigid pipe, and several couplers and nozzles to match different applications.

How does the KOOPOOL gun prevent messy leaks and slipping couplers?

This grease gun uses an upgraded double-handle 6-jaw coupler that locks onto Zerk fittings for a secure, leak-resistant connection. The reinforced 6-jaw mechanism and dual-handle action let you lock the coupler in place so you can pump without holding it steady.

• Double-handle 6-jaw coupler for secure attachment
• Reinforced jaws resist slippage under pressure
• Hands-free locking reduces grease waste and mess

Can I reach sealed bearings or tight joints with this kit?

Yes—this kit includes a detachable two-piece needle nozzle that separates into a slim needle tip and a nozzle body for access to cramped, sealed areas. The needle design is made for precision lubrication of CV joints, sealed bearings, and other confined points where standard nozzles won’t fit.

• 2-piece needle nozzle for narrow openings
• Sharp nozzle included for more general precision work
• Detachable parts increase versatility and service life

What performance can I expect from the 4500 PSI rating?

The heavy-duty die-cast head and high-strength spring enable consistent grease flow up to 4500 PSI, helping to dislodge resistant fittings and maintain steady output even in cold conditions. High working pressure ensures grease reaches heavily loaded bearings and clogged fittings without excessive pumping.

• 4500 PSI maximum working pressure for stubborn fittings
• Durable construction for long-term, repetitive use
• Smooth, reliable strokes for controlled dispensing

How user-friendly is the pistol-grip design for one-handed use?

The ergonomic pistol-grip allows single-handed operation so the free hand can position hoses or hold components. An anti-slip textured grip helps maintain control with greasy hands, and the plunger O-ring reduces internal bypass so more grease reaches the target.

• Pistol-grip for one-handed pumping and better control
• Anti-slip texture for secure handling in messy environments
• High-pressure plunger O-ring minimizes internal leakage

Who this kit is for: The KOOPOOL Mini Grease Gun Kit is suited to automotive technicians, small-fleet mechanics, trailers and lawn equipment owners, industrial maintenance staff, and hobbyists who need compact, high-pressure lubrication. It’s especially useful when access is restricted or when a secure coupler and precision nozzle are required. The kit includes a 3 oz grease cartridge, a 12" 4500 PSI flex hose, a rigid pipe, a 4-jaw coupler, the double-handle 6-jaw coupler, needle and sharp nozzles, plus a 1-year warranty and customer support to get you started right away.