Thatching screws, also called screw wire, is used for binding, sewing or screwing thatched roofs. Stainless steel wired are 5 x 35 assy countersunk head screws. Around the screws there is a 1 mm strong Chrome Nickel wire bound. The screws are galvanized or NIRO (no rust). The binding wire is bound around the roof batten and pulls down the wire in bars onto the reed layers.Usually the diameter is 1,0 mm.The length can be custom made.