Features: Compatible with Pentax K-70, K-1, K-3 II, K-S2, K-S1, K-3, K-50, K-30, K-5 IIs, K-5 II, K-5, K-500, K-50, K-30, K-x, K-7, K-m, K2000, K20D, K200D, 645D, 645Z, K100D, K10D, K20D, etc. Full manual control including manual focus and aperture priority. Infinity focus allowed. T2-PK lens mount adapter for Pentax PK mount cameras. (M42x0.75 thread pitch) Specifications: Material: Aluminum Applicable Lens: T-mount telephoto lens, folding lens Applicable Camera: Pentax PK-mount SLR camera Note: 1. Please allow 1-2 cm errors due to manual measurement. Ensure you are comfortable with this before ordering. 2. Due to differences between monitor displays, the image may not reflect the actual color of the item. Package includes: 1 x Adapter Ring