Sightmark recognizes night vision mounting diversity, and for those who use the Wilcox G24, this adapter allows the Wraith&&';;s bridge to interface with Wilcox&&';;s proprietary mount. 2mm Allen key required. Included in Package Mount Features Allows the Monocular bridge to mount to Wilcox style helmet mounts Material Aluminum Finish/Color Matte Black Dimensions, in/mm 1.10x1.22x0.43 / 28x31x11 Weight (0z) 0.33