Package contents: 2 alloy mitre track stoppers. Material and durability: Made from high-quality aluminium alloy with a smooth textured surface. High hardness and wear and corrosion resistance for long-term use. Design and function: Ergonomically designed guide rail stopper for woodworking slides. User-friendly and an indispensable helper for woodworking. Easily positioned: insert into the slide, adjust to the desired position, then fix on the fixed stopper. How to use: 1) place the beveled guide rail stopper on the slide rail. 2) press the length guide rail stopper to the desired position. 3) adjust the T-slot stopper on the fixed stopper. Compatibility and performance: Designed to work with T-slot mitre rails and guide rails, providing stable stops and repeatable positioning. Use scenarios: - Set up repeatable cross cuts and mitre joints on a sliding saw. - Align long boards for routing, trimming, or sanding along a guide rail. - Create identical parts in batch work by quickly moving and locking stops for each piece.