Product Name: High Profile Scope Ring Reducing Sleeves to Adapt for 30mm 1 Inch Model NO.: RG10 Structure: See Through Rings Material: Aluminium Custom Brand: Available Fit for Rail: Picatinny / Weaver Color: Black/ Silver Trademark: Nutrek Transport Package: Clamshell with Info Card / Gift Box Specification: 6061-T6, 7075-T6 Aluminum, STEEL, Zinc-2 or Alloy Origin: China Product Description NUTREK manufacturers complete specs of Scope Rings that pairs with most optics -with different models fit for the 1-inch tube, 30mm tube, 34mm tube, etc, at different saddle heights that accept close range 24mm aperture to 56 big size aperture for long-range and low light condition.NUTREK scope rings are constructed with meticulous attention to accuracy, with the strictest requirement for concentricity and tolerance. For varied requirements, we're able to manufacture scope rings in different materials including STEEL, 6061-T6 or 7075-T6 Aluminum, Zinc-2 Alloy, etc.Peek Through Mount for 3/8-inch Dove Tail RailSee-through rings.Including reducing sleeves to adapt for 30mm or one inch.ITEM#TUBE DIA.PROFILESADDLE HEIGHTRAIL WIDTHRG1030H-N30mm/1"HIGH26.16mm3/8-inchRG1030H-W30mm/1"HIGH26.16mm16mmEnjo Sports IncPlease contact us for more product information.OEM or ODM service are welcome, we have aprofessional design team at your service.Web: www.taband.com.cn www.borekare.com www.nutrekoptics.comAdd: #17-19, FL. 5, Building 5, No.25 Jingfu Rd., Qingyuan, Guangdong, 511518 China