400 gm, 450 gm & 500 gm Plastic Grease Cartridge The Plastic Cartridge is made out of polypropylene. It consists of three basic parts – cartridge itself, a piston cap & pull up end cap The standard – sized, injection moulded cartridge has uniform wall thickness. The Pull Ring does not break up…make your client open the cartridge as any person would have naturally done so…” and don't let him down any longer with the ring in hand”. TOTAL EASY OPENING SYSTEM WITH RING PULL Plastic Grease Cartridge 100% Polypropylenern Suitable for all grades of grease 400 Gram Capacity 450 Gram Capacity 500 Gram Capacity Fits standard grease gun Dimensionally accurate Pull Tab Easy to open “pull ring “opening Leak proof Durability No tools required