Made in the USA Combination Countersinks. Make it Snappy Tools’ Gold Screw Countersinks will drill the pilot hole and countersink or counterbore for screws in one step. Countersink to drive the head of the screw flush with or slightly below the surface. Easily control depth using an optional stop collar. Counterbore to drive the screw below the surface and plug the hole. The 82° countersink angle matches the angle on the head of most wood screws. Made of thru-hardened alloy steel for long cutting life. Precision Machined with a 1/4″ hex shank for use with quick change chucks and impact drivers. Large, hardened set screws ensure a firm hold on twist drill.