aluminum 30mm Ring Double Mounts + guide-track(16#)
product size: 52(L)x 47(W)x 17(H)
Ring Diameter(mm): 30
bayonet: 17 mm
Material: aluminum alloy
Weight(g): 72/ 85
Color: Black
bayonet: paper box / 90(L)X 55(W)X 20(H)
