Raw material: rail parts, connecting rod and rivets: stainless steel 304 or 430. The metal tail plug: zinc alloy. Plastic parts: Nylon 6. Data evaluation: Function: cycling test by ultra 25,000 rpm. Corrosion resistance: comply with BS EN1670: 1998 Level 5 standard. Features: provides a series of hanging on and casement type window stays. -12-inch and 16-inch flat open on the hanging type 8-inch to 24-inch high grade stainless steel 430 materials. Adjustable slider suitable for the type of load and ambient conditions suitable for the type of load. When the anti-skid device mounted on a stainless steel carrying more than 30KN. WINDOW STAY total stacking height of 13 and 17 mm, suitable for all popular window type. Sell ??Units: Kexin according to your requirements, you can use other materials