fischer ULTRACUT FBS II 10 x 100 45/35/15 US, 50 Pieces, 536862

With up to 3 embedment depths, it allows for the same screw to be used for different component thicknesses. The special saw tooth geometry enables fast cutting into the concrete. The approved adjustment for the concrete screws allows the screw to be unscrewed twice to align the attached part, and then to tighten the screw again., Weight: 0.86 Pounds, Manufacturer: fischer