... :m8 m10 Material:carbon steel use plastic,Wood,aluminum window,door frame Window metal frame anchors1.Material:carbon steel.2.Diameter:8mm ... and 10mm.3.Application:For fixing of plastic,Wood,aluminum window and door frames to concrete,brick,hollowblocks and cheeker brick ... will satisfy you.If you are interested in it,pls free to message me.We will reply you asap.Thanks!