40-4012-Black-FB is a 40mm x 120mm metric 40 series rectangular T-slot profile with eight open T-slots, three on each 120mm face and one on each 40mm face. The profile is smooth, which makes it resistant to dirt and debris while also easy to clean. The 40-4012-Black-FB profile is compatible with 40 series fasteners and has center cavities that can be pressurized up to 1.034 N/mm2 (150 psi). The eight open T-slots make this profile great for mounting accessories, flat plates and hinges. It lends itself to linear motion and machine frames.