SAE Sizes • (30) Straight 1/4‑28 grease zerk fittings • (20) Straight 1/8‑27 grease zerk fittings • (15) 45° 1/4‑28 grease zerk fittings • (15) 90° 1/4‑28 grease zerk fittings • (15) 45° 1/8‑27 grease zerk fittings • (15) 90° 1/8‑27 grease zerk fittings.