[Grease Leak Reduction] Lock Coupler Grease Up Agricultural Equipment Grease Gun

There is something called a "grease gun" that is frequently used in the maintenance of farm equipment.
Grease gun, used when injecting grease around gears and power.
In today's video, a leak always occurs when grease is injected.
I purchased a "lock coupler" to reduce that leakage.
Please take a look!