Take the struggle out of trying to grease recessed or partially obstructed fittings on vehicles, fork lifts and farm equipment with the STEELMAN 06134 5-Inch Straight Extension Grease Gun Push-Type Adapter. Attaching to any standard grease gun hose or extension via a zerk fitting on its end, this 5-inch long coupler lets you access recessed and partially obstructed grease fittings beyond the reach of standard couplers. The push-on type connector on the end slips easily over zerks and rely on hand pressure to keep a secure sealed on the fitting. A knurled locking sleeve on the base of the adapter helps secure it to existing push-on grease gun couplers for tool-free attachment.