Milodon's Transmission Dipsticks Assemblies offer a sleek, unique design that are CNC machined from billet stainless steel. The dipstick tubes inside diameter is 39% larger than most other designs allowing more speedy filling and the dipstick itself is pre-calibrated with the OEM-style add and full levels for accurate readings. An o-ring sealed handle and double o-ringed bottom positively seals against water and dirt.