The Walthers Cornerstone 933-977 HO Diaphragms Black Rubber Pair is a pair of black rubber diaphragm gaskets for HO scale passenger cars. Replacement or upgrade diaphragms for WalthersProto and other HO scale passenger car models. Black rubber material simulates the prototype.

Key Features:
- HO Diaphragms Black Rubber Pair
- Prototype-accurate detail for HO scale layouts
- Easy to install or apply
- Black rubber material simulates the prototype
- HO scale (1:87) - standard gauge
- Ships factory-assembled and ready to use
- Scaled for HO scale (1:87) layouts
- Based on real-world prototype equipment for maximum authenticity
- Authentic color scheme: Black
- Manufactured by Walthers - a trusted North American model railroad brand
- Adds authentic detail and realism to any model railroad layout scene
- Pairs beautifully with other scenic accessories for a complete, cohesive scene