16pc 3/8″ & 1/4″ drive METRIC SAE Combination Ball Hex Bit Set. 1/4″dr 3-6mm, 1/8″-3/16″ 3/8″dr 7-10mm, 7/32″-3/8″. Tracking information will be provided for your reference. Return must be NEW in package and sealed if applicable. by admin // August 20, 2023 Standard Sae Metric