This is a 4-Way Wrench with Plug Storage. It can be used to tighten and / loosen Glow Plugs and prop nuts or any nut in the proper size range. / / FEATURES: It has storage for 4 glow plugs (helps them stay clean) / Works with both Standard and Metric sizes, 3/8 (10mm), 1/2 (12.7mm) / 5/16 (8mm), 7/16 (9mm) / The Glow Plug Wrench is extended for taller heads / Chrome plated / / INCLUDES: One 4-Way Wrench w/Plug Storage / gab4/19/94 / ir/jl