The Robertson head, AKA the square head, dates again to 1907. Frequent in copyright and extensive considered to be a curiosity in the U.S., it’s starting to be a lot more prevalent right here as the square head resists slipping much better than the Phillips head. Also be sure that https://raymondjqvzc.blogs-service.com/60431828/5-easy-facts-about-types-of-screw-head-punch-described