Nut Splitter is a tool used to remove damaged or seized nuts from or threaded studs. Huge time saver when removing freeze, rusted, or rounded nuts For the removal of damaged or corroded nuts without damaging the thread Best for the home/ workshop/hobbyist etc. Sizes: 5/16inch-1/2inch 9-12mm Nut Splitter. Requires 12mm Spanner to tighten. 1/2inch-5/8inch 12-16mm Nut Splitter. Requires 14mm Spanner to tighten. 5/8inch-7/8inch 16-22mm Nut Splitter. Requires 18mm Spanner to tighten. 7/8inch-1-1/16inch 22-27mm Nut Splitter. Requires 21mm Spanner to tighten. Application: Household Tool Set DIY Supplies: Metalworking color:Red shell Material:45 steel Package Contents: 1 set x Nut Splitter Tool Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.