• 5 Piece Set.
• Sizes: 11mm - 17mm  (7/16" - 5/8")
• 18-30 teeth grip and work when all others fail.
• Pass-through design for any length bolts and studs.
• Quick release feature; just tap and fastener releases.
• Mark-proof holder won’t scratch and surface, stores easily in toolboxes.
• Flush face teeth allow the immediate gripping action - even on round head bolts and pan head screws.
• XTRAKTOR has pass-through design that works with any length bolt or stud.
• 18-30 teeth can grab and rusted, rounded, damaged or stuck fastener.
• Use with spanners or impact wrench.