Alemite Grease Gun 555‑E Professional pistol‑grip grease gun with ergonomic cast handle and 18" (45 cm) flexible hose. The 555‑E accepts cartridges and bulk loading and features an exclusive dual‑leverage mechanism for volume or pressure mode. In volume mode it dispenses approximately 1 oz (28.4 g) per 30 strokes; in pressure mode it can develop up to 7,500 psi (≈535 bar). Cylinder capacity ~16 oz (453 g). Quick priming is achieved by a heavy‑duty follower spring and bleeder valve; the unit includes a long‑lasting coupler and universal follower for cartridge and bulk use.