[Features] Can be applied to thick iron plates such as H steel without pilot holes. ● Serrations are used on the back of the head to prevent head jumping. ● No.3 is used to prevent damage to the square bit.
[Applications] Attaching to iron plates, H steels, angles, C-chans, etc. (without firing the materials on the left). ●Applicable plate thickness: 2.3mm to 9.0mm