["Description:\nbrand new and high quality.\nFeature:\nMade of high-quality aluminum material, durable, firm and stable for us to use.\nThis is an adapter ring mount which allows use of M42 lenses on any for Pentax PK mount SLR or DSLR camera body which is for for AF lenses.\nfor for Pentax K-S1 K-3 K-50 K-5 II K-5 IIsK-30 K-01 K-5 K-r K-x K-7 K-m K20D K200D K10D K100D Super.\nRemove both lens/adapter together from the camera, press the lens lock and then remove the adapter from the lens simultaneously.\nMount the Lens onto the adapter and then mount them onto the camera.\nThere is no ROM connection on the ring so diaphragm control of the lens is set manually.\nAdapter Ring only, other accessories demo in the picture is not included!\n\nSpecifications:\nItem Type: Adapter Ring\nMaterial: Aluminum Alloy\nSize: Outer Diameter: 51mm/2in\nColor: Black\nQuantity: 1 Pc\n\nNote:\nNo retail package.\nTransition: 1cm=10mm=0.39inch\nPlease allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid.\nDue to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\n\nPackage Includes:\n1 x Adapter Ring"]