SPECIFICATIONS: SHROUD MATERIAL: NYLON PLASTIC NVG MOUNT MATERIAL: ALUMINUM COLOR: BLACK HARDWARE INCLUDED: LOCK WASHER x 3 3 SETS OF ALLEN BOLTS FOR SUITABLE HELMETS 2MM ALLEN (12MM / 0.5 IN) BOLT x 3 2MM ALLEN (10MM / 0.37 IN) BOLT x 3 2MM ALLEN (8MM / 0.31 IN) BOLT x 3 EVA STICKER PAD x 1