Proto® 111 Piece Metric Add-On Set With Top Chest J542710-4SG-IC ITEM #:J99571A Features and benefits Specifications Features and benefits 1/4", 3/8", 1/2" Drive tools.Designed for fastener sizes 4 mm - 24 mm. Specifications Piece Count 111 Weight [Lbs] 28 (Tools Only) Add to Wish list Add to Set Buy Now Print Warranty Share