257 x 20mm Picatinny Rail Mount Set 25 Grooves ScopeFeatures: - This item accepts all weaver standard rings which will enhance your firearms in a way only weaver can do - Rail type: Picatinny and weaver  - Complete with screws for easy installation - Number of ring slots: 25 which make it easier to set up eye relief and find more desired placement of scopes or red dot sights on top of the receiver - Light weight design   Material: Aluminum   Package weight: 0.142 kg Product size (L x W x H): 25.70 x 2.00 x 1.00 cm / 10.12 x 0.79 x 0.39 inches Package size (L x W x H): 26.00 x 2.50 x 1.50 cm / 10.24 x 0.98 x 0.59 inches Package Contents: 1 x Mount, 1 x Wrench, 3 x Screw