Grease Fitting Tool Kit 1/4-28 SAE, 1/8 -NPT, M10x1, M8x1, 3/8, 5/16, 7/16 Hex

One tool accommodates 1/8" NPT PTF grease zerk fittings and M10x1, featuring a hex size of 3/8" (9.5mm) and 7/16" (11mm). The other tool fits 1/4"-28 SAE, M8x1, and Zerk fittings, with a hex size of 5/16" (7.85mm) and 3/8" (9.5mm).