Applications include: M10 x 1mm, M10 x 1.25mm, M9 x 1mm, M8 x 1mm glow plug tip extraction tools.Unique extended drill bits with crimped and welded ends for increased access and a built in depth control collar to ensure the maximum depth cannot be exceeded.Specially machined thread taps, crimped and welded to extra-long extensions for increased access.Patented German manufactured brushes constructed using a special twisted core to prevent damage to internal engine parts and driven with a brush holding tool.Due to the size of individual threaded components and the nature of the task, all components should be considered consumable. Spare parts are available.