ACM Group – Product Listing. Impact Socket Set 3/8″ & 1/2″ Socket Set 59PCS SAE 5/16″ to 1-1/4″ and Metric 6-32mm, 6 Point Cr-Mo Alloy Steel for Auto Repair, Easy-to-Read Markings, Rugged Construction, Storage Case. Product Description. Premium Cr-Mo Alloy Steel Construction: Crafted from premium impact-grade alloy steel, our 3/8″ & 1/2″ impact socket set […]