Hawke Match Mount Rings Weaver 1 in. High High grade aluminum construction;Internal cushion tape prevents marking and damage;Double hex screws hold your scope firmly in place;Weaver version features a crossbor for added security;Weaver version features a crossbor for added securityAvailable in sizes: Medium, Hightable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; } Item Category Code: 3300 Product Group Code: 3300C Product Sub Group 1: 3300C3 Inactive: No Prop65 Applies: No