Specification Brand : Desmond-ICE BulletPoint1 : It is flat clamping mechanism designed in order to protect your accessories more safely and stably; and avoid unaesthetic pressure marks BulletPoint2 : Precision machined solid all-aluminum no warping prism rail with 2 aluminium locking screws BulletPoint3 : You can attach your telescope to mounts or heavy accessories to Losmandy level dovetail bars with it BulletPoint4 : There are 7 counter-sunk bores on the plate; four M8 bores and three M6 bores; so that it can attach to almost all surfaces BulletPoint5 : Dimensions: Length 150 mm - width 102 mm "without screws" - width with screws 143mm - high 30mm Color : 150mm Vixen/Losmandy Clamp ExternallyAssignedProductIdentifier : 6971336228533 ExternallyAssignedProductIdentifier1 : 0826635846741 ExternallyAssignedProductIdentifier2 : 826635846741 FocusType : Fixed Focus GpsrSafetyAttestation : 1 ItemName : ICE 1.25" to 2" Step Up Ring Filter Telescope Stepping Adapter ItemPackageDimensions_Height : 8.382 centimeters ItemPackageDimensions_Length : 0.127 centimeters ItemPackageDimensions_Width : 8.382 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : telescope-photo-adapters LensDesign : Prime Manufacturer : Desmond MinFocalLength : 1 millimeters ModelNumber : Icestep4658 PartNumber : Icestep125-2 ProductDescription : 1.25" male thread. 2" Female thread. Use a 2" filter on a Telescope with a 1.25" filter thread. All Metal (aluminum). Ice Brand ProductSiteLaunchDate : 2016-02-09T00:23:55.065Z Style : Modern SupplierDeclaredDgHzRegulation : not_applicable UnspscCode : 45121600 ZoomRatio : 80:1