Creates a stronger internal thread in soft metals. Ideal for repairing damaged or stripped internal threads. Protects tapped threads against wear and damage. Set includes drill bit, thread tap, insert installation and lug breaking tool. Supplied with three different lengths of thread insert. Features & Benefits:Creates a stronger internal thread in soft metals.Ideal for repairing damaged or stripped internal threads.Protects tapped threads against wear and damage.Includes drill bit, thread tap, insert installation and lug breaking tool.Supplied with three different lengths of thread insert.Model No. TRM12 Specifications: Model No TRM12 Brand: Sealey Nett Weight: 0.46kg Replacement Inserts: TRM12R Thread Lengths: 9, 18mm (2 of each), 14mm (x4) Thread Size: M12 x 1.75mm