Plain Plug Gauge, Size - Go - 8.106mm to 8.110mm & Nogo - 8.290mm to 8.300 mm & Depth Go - 19.897mm to 19.850mm, Nogo - 20.261mm to 20.239 mm, Go - Nogo Gauge (Required to check the DCS  Reaming Hole l), Code - PPG8.1/19