This helmet fastener is not compatible with Adflo, Speedglas 9100FX, Series, or K2800-1. Helmet fasteners feature a knurled design for easy twisting and secure fit, reducing slippage. These fasteners are designed to fit flip hoods and replace easily damaged plastic fasteners. Compatible with Fibre Metal 2090 with 3C headgear. Reliable Material: Made of quality aluminum, these welding helmet accessories are sturdy, resistant to corrosion, rust, and fading, offering long-term use and a smooth, comfortable experience. Easy to Match: These pipeliner welding hood parts are flexible and durable, easily matching screws and your helmet to maintain a tight fit and prevent loosening. Note: Slight color variations may occur due to lighting and display differences; this does not affect functionality. Color: Red Material: Aluminum Package Contents: 1 set x Welding Hood Fasteners Only the above items are included; other products are not part of the package. Note: Light reflection and different displays may cause slight color differences from the actual product. Measurement error allowance is +/- 1-3 cm.