Measures angle of rotation after - in -angle application. 1/2inch male & female square drive and an adjustable holding rod hold the gauge in position during use. scale is marked at 2 degree increments & intervals of 10 degree and 30 degree. zeroed for application by turning the tool housing. BUILT TO LAST Durable plastic gauge features clear, bold lines for easy identification ensures proper tightening. SERVICE YOUR VEHICLE perfect for domestic and international vehicles that use to yield fasteners. Often used to service late model engines. FITS YOUR 1/2 INCH TOOLS The 1/2-inch square male and female drive on the dial gauge is designed to fit your degree wrench (not included). colour: silver Material: Plastic + Alloy size: 12.5mm Package Contents: 1*Angle Gauge Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.