Specification: 12 different Adjustment Tool keeping your 2 cycle s running at good performance, including , Small Head , Single D, Small Head Single D, Double D, Hexagon, 21 Teeth Splined (upgraded from 7 Teeth Splined) etc, used for MOST 2 cycle . Indispensable for who is maintaining personal equipment plus stuff for friends family Ergonomic designed Adjusting Kit handle provides convenience comfort for working. Built with squared handles, which makes it easy to tell 1/4 turn increments on the mixture settings. Heavy-duty adjusted head, precise stability. Screwdriver Marked with tool type on the handle, easy to recognize 4 Size 2-Feet-Long Fuel Line Hose Tube I.D. x O.D. 3/32" x 3/16" 1/8" x 3/16" 1/8" x 1/4" .080" x .140"