Features T-slot t-track bolster caterpillar fixing slot, smooth and smooth sliding surface. It is a connector for t track and it can make a cross guide rail t. Intersection T-track is made of aluminum alloy material, strong and durable during use. Area of application: electric circular saw table upside down, table saw board cross connector, DIY wood accessories. This T-track connector crossover points is accurate scale, and easy to use. Specification: Item Type: Rotary Files Bits Set Material: carbide, tungsten steel Specifications: SA 3, SA 1, SC 3, SF 3, SC 1, SH 1, SH 1, SE 3, SL 3 Package list: 1 x SA 3 Files Bit 1 x SA 1 files bit 1 x SC 3 Files Bit 1 x SF 3 Files Bit 1 x SC 1 file bit 1 x SH 1 file bit 1 x SH 1 file bit 1 x SL 1 file bit 1 x SE 3 Files Bit 1 x SL 3 Files Bit 1 x Storage Box Package List