THEY’RE OLD-STYLE HAND-OPERATED GREASE GUNS (MANUAL GREASE PUMPS) — USED TO FORCE GREASE INTO BEARINGS OR OTHER LUBRICATION FITTINGS (ZERK FITTINGS). THE TOP CLAMP/VALVE ATTACHES TO THE GREASE NIPPLE; THE LONG WOODEN HANDLES ARE FOR PUMPING. THEY LOOK LIKE VINTAGE/FIELD-SERVICE UNITS.
