Without this rings u cannot attach filter holder and square filter to the lens.Features:

• Brand new
• New generic adapter ring for Cokin P Series filter holder
• Compatible with Cokin P series filter system. Fits any lens with a 52mm filter thread
• The adapter ring is an essential piece of the Cokin P series filter set. First, mount the metal adapter ring onto the front of your lens. You will then be able to attach a filter holder and color filters to your camera
• Made of high quality anodized black aluminum (metal)
• Extremely solid and lightweight. Specifically designed for your camera for a tight and secure fit. No wobbling or cross-threading.

Package includes:1* Adapter ring 52mmIt is fit for the following lenses and more:Nikon DSLR10.5mm 2.8G fisheye AF DX18-55mm f/3.5-5.6G VR AF-S DX NIKKOR 18-55mm f/3.5-5.6G ED AF-S DX Zoom-Nikkor 18-55mm f/3.5-5.6G ED II AF-S DX Zoom-Nikkor 24mm f/2 NIKKOR24mm f/2.8 NIKKOR28mm f/2 NIKKOR28mm f/2.8 NIKKOR28mm f/3.5 AIS NIKKOR35mm f/1.4 NIKKOR35mm f/2 NIKKOR 24mm f/2.8D AF NIKKOR28mm f/2.8D AF NIKKOR35mm f/2D AF NIKKOR35mm f/1.8G AF-S DX NIKKOR 35-70mm f/3.3-4.5 NIKKOR35-105mm f/3.5-4.5 NIKKOR40mm 2.8G AF-S DX Micro45mm f/2.8 P NIKKOR50mm f/1.2 NIKKOR50mm f/1.4 NIKKOR50mm f/1.8 NIKKOR50mm f/1.4D AF NIKKOR50mm f/1.8D AF NIKKOR 55mm 2.8 Micro 55-200mm f/4-5.6G ED AF-S DX NIKKOR70-210mm f/4.5-5.6 NIKKOR105mm f/2.5 NIKKOR135mm f/2.8 NIKKOR200mm f/4 IF AI-S Micro NIKKOR400mm f/2.8 IF-ED NIKKOR800mm f/5.6 IF-ED NIKKORMicro 55mm f/2.8 NIKKORMicro 105mm f/2.8 NIKKORMicro 200mm f/4 IF NIKKOR85mm f/3.5G ED VR AF-S DX Micro Nikkor 200mm f/2G ED-IF AF-S VR NIKKOR200mm f/2G ED VR II AF-S NIKKOR 300mm f/2.8G ED-IF AF-S VR NIKKOR400mm f/2.8D ED-IF AF-S II NIKKOR500mm f/4D ED-IF AF-S II NIKKOR600mm f/4D ED-IF AF-S II NIKKOR75-240mm f/4.5-5.6D AF NIKKOR200-400mm f/4G ED-IF AF-S VR NIKKOR200-400mm f/4G IF-ED II AF-S VRNikon 1Nikon lens 1 NIKKOR 32mm 1.2 black Nikon lens 1 NIKKOR 32mm 1.2 silverNikon lens 1 NIKKOR VR 6.7-13mm 3.5-5.6 blackNikon lens 1 NIKKOR VR 6.7-13mm 3.5-5.6 silverCanon FD 24mm f/2  FD 24mm f/2.8  FD 28mm f/2  FD 28mm f/2.8  FD 35mm f/2  FD 35mm f/2.8  FD 50mm f/1.2  FD 50mm f/1.4  FD 50mm f/1.8  FD 50mm f/2  FD 50mm f/3.5 Macro  FD 85mm f/1.8  FD 100mm f/2  FD 100mm f/2.8  FD 100mm f/4 Macro FD 135mm f/2.8  FD 135 f/3.5  FD 200mm f/4  FD 35-70mm f/3.5-4.5  AC 35-70mm f/3.5-4.5  FD 35-70mm f/4  FD 35-70mm f/4 AF  FD 70-150mm f/4.5  FD 75-200mm f/4.5  FD 100-200 f/5.6  EF 28mm f/2.8  EF 35mm f/2  EF 50mm f/1.8 II  EF 50mm f/2.5 Compact Macro  EF-S 60mm f/2.8 Macro USM  EF 135mm f/2.8  EF 300mm f/2.8L IS USM  EF 400mm f/2.8L IS USM  EF 400mm f/4 DO IS USM EF 500mm f/4L IS USM  EF 600mm f/4L IS USM  EF 800mm 5.6 L IS USM EF 35-80mm f/4-5.6  EF 55-200mm f/4.5-5.6 II USM  EF 80-200mm f/4.5-5.6 II  EF 200-400mm 4.0 L IS USM extender 1.4x  EF 135mm 2.8 Soft-Focus  EF 200mm 2.0 L IS USM  EF 28mm 2.8  EF 300mm 2.8 L IS II USM EF 35mm 2.0  EF 400mm 2.8 L IS II USM  EF 400mm 2.8 L IS USM EF 400mm 4.0 DO IS USM  EF 40mm 2.8 STM  EF 500mm 4.0 L IS II USM  EF 50mm 1.8 II  EF 50mm 2.5 Compact macro  EF 55-200mm 4.5-5.6 II USM  EF 600mm 4.0 L IS II USM  EF 800mm 5.6 L IS USM  EF-M 18-55mm 3.5-5.6 IS STM  EF-S 60mm 2.8 macro USM  Tamron lens AF 55-200mm 4.0-5.6 Di II LD macro for Canon OlympusS Zuiko MC Zoom 35-70mm f/3.5-4.8Zuiko Zoom 70-210mm f/4.5-5.6Zuiko Digital 35mm f/3.5Zuiko Digital ED 50mm f/2 MacroZuiko Digital 17.5-45mm f/3.5-5.6 Tamron24-70 f/3.5-4.5AF 55-200mm 4.0-5.6 Di II LD macroTokinaTokina lens AT-X Pro 35mm 2.8 DX macro for NikonSonyTamron lens AF 55-200mm 4.0-5.6 Di II LD macro for Sony/Konica Minolta Zeiss E-Mount lens Touit 32mm 1.8 for Sony NEXZeiss E-Mount lens Touit 50mm 2.8 for Sony NEXPentaxPentax lens smc DA 18-55mm 3.5-5.6 AL Pentax lens smc DA 18-55mm 3.5-5.6 AL II Pentax lens smc DA 18-55mm 3.5-5.6 AL WR Pentax lens smc DA 50-200mm 4.0-5.6 ED Pentax lens smc DA 50mm 1.8 Pentax lens smc DA L 18-55mm 3.5-5.6 ALPentax lens smc DA L 50-200mm 4.0-5.6 EDFujifilmFujifilm lens XF 18mm 2.0 R Fujifilm lens XF 35mm 1.4 R Zeiss X-Mount lens Touit 32mm 1.8 for Fujifilm XZeiss X-Mount lens Touit 50mm 2.8 for Fujifilm X