Mayhew's inspection Hooks & Picks mark metal, install & removes cotter pins, O-rings, snap rings, washers, scrape gaskets & remove hoses. Hooks and picks are used for numerous operations for automotive and electrical work, especially in tight spaces and for scribing lines, o- ring and cotter pin removal and for breaking radiator connections. This scriber has one 90 degree and one straight pick made of high carbon polished steel.