Craftsman Socket Racks SAE Drive Tool Holder Rail 3-Piece Set 1/4", 3/8", 1/2". Spring-Loaded Ball Release Socket Studs For Easy On And Off. Designed So You Can Add 1/4", 3/8" And 1/2" Drive Socket Studs To Any Of The Rails So You Can Customize Them To Fit Your Needs.
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