The PL Mount Modification Kit (Panasonic EVA1) allows users to convert their EVA1 camera to PL Mount through a short modification process. All necessary tools are included in the kit. The PL Mount is made of aircraft grade aluminum and includes the PL port cap. Shims are provided with the kit for adjusting back focus and the appropriate shims are installed prior to shipping. Further adjustment should not be needed but can be checked using a wide angle lens and a focus chart.The modification process can be reversed! If you choose to go back to EF mount in the future, you can do it by reversing steps in the process. With this kit, the modification is performed by the user. If you prefer Wooden Camera to perform the modification procedure, choose PL Mount Modification Kit with Installation Service.Important Note: While the vast majority of lenses are compatible, due to the ND filter turret on the EVA1, lenses with a rear protrusion longer than 33.5mm, measured from the PL flange, are not compatible.Includes:6x M3 socket cap screws for installation1x shim setCamera is not included.Shim set (stackable to achieve necessary thickness)Silver .0127mm (0.0005") Amber .0254mm (0.001")Purple .0381mm (0.0015")Red .0508mm (0.002")Green .0762mm (0.003")Tan .1016mm (0.004")Blue .127mm (0.005")Specifications:Weight: 251g (0.6 lbs)Dimensions: 85.1 x 81.8 x 48 mm (3.4 x 3.2 x 1.9 in)