The Fischer hole centres clamp, metal on the is a Montagefreundliche solution to holding of steel pan Zerrohren and electric Rokabeln. The metal clip with thread can be used with the Fischer nail anchor FNA II 6 x 30 m 6 x 41 and using the pole screws STST 6 x 60 and STST 6 x 80 in concrete, solid brick concrete and reinforced hollow panels. With the Fischer nail dowel N 6 x 40/10 m 6 will help keep your distance clips securely in concrete, or also in solid brick, building bricks and concrete.