v-blocks V30 V33 range 6-30mm 6-32mm v block with clamp set

Use method and material
It is very close to the cast iron square box. The difference is that the magnetic square box has magnetic force on the V-groove part and the bottom part, so that the workpiece to be tested can be firmly fixed on the square box, which is convenient to use, and also greatly reduces the instability of the workpiece. Or negligence during the operation, causing the workpiece to slip and hurt the staff.