Steel galvanized,friction stay four bars for casement window used. 18*16*2.0mm,from 8-20inches.

can be make of stainless steel.it is up to your request

bottom slot:18mm,22mm,15mm

size:8-20 inch

color:yellow zinc/galvanized

bars:2-6bars,

thickness:2.0/2.5/3.0mm

galvanized friction stay