Fotodiox Lens Mount Adapter- PK-NEX, Pentax K/PK Lens to Sony Alpha Nex E-mount Camera Adapter, fit Sony NEX 3, Nex 5, NEX-VG10 Mounts Pentax K Mount (PK) SLR Lenses to Sony E-mount mirrorless cameras High-tolerance precision craftsmanship; infinity focus or beyond guaranteed All-metal design; hardened anodized aluminum construction Premium grade Fotodiox adapter 24-Month Fotodiox Warranty