Change Lever Gear System involves a change gear mechanism by changing lever for required speed. Brisk Tech Engineers offers Change Lever Gear System. Brisk Tech Engineers also manufactures plano milling heads, milling attachments, polygon turning machines, multi drilling machines, in situ milling and drilling machines, hole deburring and chamfering tools, automatic back spot facing tools and counter boring tools. The Change Lever Gear System has a quill movement and fine feed arrangement. In this System six speeds are available. Each choosing speed is marked with alphabetical stickers around the lever.