Heavy duty steel grease gun with die-cast aluminium head. Coupler and rigid extension tube. Reversible plunger, bulk or cartridge loading. Single handed operation. Accepts standard 400g grease cartridges. Compatible with Silverline Grease Gun Delivery Tube (633868). Heavy duty steel grease gun with die-cast aluminium head. Coupler and rigid extension tube. Reversible plunger, bulk or cartridge loading. Single handed operation. Accepts standard 400g grease cartridges. Compatible with Silverline Grease Gun Delivery Tube (633868).