This listing for for a SINGLE INCRA Steel Miter Slider. The INCRA Miter Slider SE combines the versatility of the INCRA Build-It products with the unique performance and feel of the adjustable GlideLOCK miter bar used on INCRA miter gauges. Miter Slider SE is not recommended for stationary jigs that must be locked into position within a miter slot; choose standard aluminum Miter Slider for these applications. Steel bars are more rigid than wooden or plastic runners and are not susceptible to changes in humidity or temperature. Miter Slider SE bars have (4) #10-24 holes that mate with INCRA Build-It Panels. Miter Slider SE bars also have (3) 1/4"-20 holes along the length to accept knobs and other fasteners commonly used when building jigs and fixtures. Long-wearing Nylon GlideLOCK adjusting discs provide a precise fit in the miter slot of most table saws, router tables and band saws. Nylon GlideLOCK adjusting discs give the bars a smooth, low-friction travel. Bars include removable T-slot retaining clips for BOTH ends of the bar for superior stability of larger jigs. Miter Slider SE is compatible with all INCRA Build-It Panels. Miter Slider SE fits square-sided 3/4" x 3/8" miter slots with or without T-slot bottom. GlideLOCK adjustment for slots measuring 0.740" to 0.765" in actual width.