12 piece 1/4 inch hex drive impact bit set including all of the most commonly used 1.18 inch/30mm long torx (TX) impact bits in one handy set1.18 inch/30mm long 1/4 inch hex impact bits: TX10, TX15, TX20 (x3), TX25 (x2), TX27, TX30 (x2), TX401/4 inch drive accessories: 60mm magnetic impact bit holderImpact bits and accessories feature a new design for higher torsion and are suitable for use with impact power toolsSupplied in a unique Teng Tools TJ tray featuring a clear fold up lid so you can see everything inside the set as well as a sliding catch to secure the set when not in use