The OEMTOOLS 6-pc 3-Post Socket Trays, No. 22233, allows users to sort sockets in ascending order for quick and easy identification. Includes six trays: 1/4", 3/8", and 1/2" in both metric and SAE. The metric sockets range from 4mm to 15mm (1/4" drive), 6mm to 20mm (3/8" drive), and 10mm to 27mm (1/2" drive). The SAE socket range is 1/8” to 5/8” (1/4" drive), 1/4” to 1” (3/8" drive), and 3/8" to 1-1/4" (1/2" drive). East post features an extended base for a more secure fit. Also available in red/gray (No. 22413) and orange/black (No. 22418).