The GripEdge 9-pc RPT 1/4" & 3/8" Drive Long Ball Star Bit Socket Set, No. BST9LS, is a precision-engineered solution designed for professionals who work in confined, hard-to-reach spaces. Introduces a second-generation Ball Star geometry that allows up to 15.5 degrees of pivot. At the core of BST9LS is GripEdge's patented Rounding Prevention Technology (RPT). Each bit is precision-machined from high-strength S2 tool steel, featuring a slimmed-down profile designed to maximize access in confined areas. At 6" in overall length, each socket is suited for reaching recessed or obstructed star fasteners.