Model 5900 is a Powerlock coupler unit. This device is spring-loaded and should automatically close on the fitting when released. If it is not closing properly, check to ensure that the fitting is clean and free of any debris. Additionally, if the fitting is located in a hard-to-reach area or a tight space, the outer portion of the coupler may get caught on nearby obstructions.
Lincoln PowerLock Lever Action Grease Coupler, 10,000 PSI, Model# 5900

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- Lever activated for quick attachment and release from fitting
- Comfortable, ergonomic design with protective grip
- Secure attachment enables single-handed use of grease gun
- Less grease bypass and lower lubricant cost
- Durable, all-steel construction
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