Adjustable thread restorer to suit Metric and Imperial threads from Ø31.75-127mm(1-1/4"-5") external diameter. Simply attach to undamaged section of thread, then wind back the thread with the knurled adjuster and the chaser will restore the damaged thread section. Built-in storage for six dies. Features & Benefits:Adjustable thread restorer to suit Metric and Imperial threads from Ø31.75-127mm(1-1/4"-5") external diameter.Simply attach to undamaged section of thread, then wind back the thread with the knurled adjuster and the chaser will restore the damaged thread section.Built-in storage for six dies.Model No. AK315 Specifications: Model No AK315 Brand: Premier Cutting Range: Imperial; 4, 5, 6, 7, 7-1/2, 8, 9, 10, 11, 11-1/2, 12, 14, 16, 18, 20, 24tpi, Metric; 1, 1.25, 1.5, 1.75, 2, 2.5, 3, 3.5mm Pitch Nett Weight: 1.17kg