- Specially forged fixed arm for 12 x 8 mm grooves- For secure fastening of guide rails from Festool, Protool, Metabo, Makita, Hitachi, etc. and for clamping in profiles as well as work tables- Rapid – up to 5 times faster than conventional clamps- Secure – unaffected by vibrations- Strong – clamping force up to 540 lb Bessey GTR16S6H - Track/table clamp