Feature:1. Made of highquality aluminum alloy, it is strong and durable and with a long service life.2. The surface is painted with antioxidation treatment, smooth appearance and corrosion resistance.3. Suitable for Pentax K mount SLR camera, which can help to record the biological microscope picture after the transfer.4. It can be separated and used separately, and the middle transfer part is designed with M42x0.75 interface.5. Easy to install and operate. It can be used with just a few simple installation steps, which can effectively save your time.Specification:.Item Type: Microscope Adapter RingMaterial: Aluminium AlloyProduct Color: Black Product Weight: Approx. 73g/2.6ozMount: T Mount, T2 Mount, K MountApplicable Models: For Pentax K Mount SLR CameraPackage List:1 x T Mount Microscope Adapter Ring1 x Camera Lens Adapter