PowerLock CouplerLincoln PowerLock Coupler Lincoln's model 5900 PowerLock coupler simplifies the lubrication process. The easy to use PowerLock coupler is lever activated for quick attachment and release. Its reverse jaw design holds the fitting securely to the seat for less grease bypass and lower lubricant costs while enabling single handed operation. The PowerLock's durable, all steel construction provides long service life. Its flexible rubber sleeve offsets
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