Made of high impact ABS plastic for strength and durability. Resistant to oil and grease, perfect for the home garage or trade workshop. Labelled with appropriate sizes for quick identification. Features deep and shallow socket holders. Set includes trays for 1/4" drive (holding sizes 4.5-15mm), 3/8" drive (holding sizes 6-20mm), and 1/2" drive (holding sizes 10-27mm).