Texas Knifemakers Supply: Pair of Brass Bolsters for Fixed Blade Knives Add custom brass bolsters to your fixed blade hunting knife! Sold as a pair. Each bolster is 1-1/8" across top, 1-1/4" on blade side, and 1/4" thick. Made from 360 free machining solid brass in the United States of America. Polishes to a mirror finish.