The Hudy 20-30mm Ride Height Gauge is a high-quality, adjustable, and easy to use ride height gauge, perfect for measuring ride height on 1/10 and 1/8 off-road buggy and truggy chassis'. CNC machined from premium Swiss 7075 T6 aluminum, the gauge is black color coated, and features a laser-engraved scale that makes it easy to dial in the perfect ride height for your setup.The gauge twists by 1mm increments to increase or decrease the height in a range of 20-30mm. It is super small and lightweight, allowing easy storage & transport.