Most windscreens do not come with setting blocks to hold the lower part of the glass during an install. GT Tools® Setting Blocks are ideal for installing the glass properly. Nylon blocks are 1/2” long with a self-tapping screw to mount to the vehicle body. Once the setting blocks are mounted the windshield can be slid across the blocks if necessary. Once the glass is installed the blocks can be removed or left in place for additional support. Each block has a rubber seal to prevent water leakage. If the setting blocks are removed be sure to seal the holes. Packaged in a set of 10 pieces.