10 Best Single End Countersinks 2025

Welcome to our Top 10 Single End Countersinks review page! We've scoured the market and tested a variety of products in this category, ranging from a 7.7 score up to an impressive 9.5 score. And the brand that stood out above the rest? KEO Cutters. Their KEO 53512 Cobalt Steel Single-End Countersink is a standout product that we highly recommend. With an 82 degree point angle and a round shank, this uncoated (bright) finish countersink delivers precise and clean cuts every time. Its 5/16" shank diameter and 1/2" body diameter make it a perfect fit for a variety of projects. Trust us, you won't be disappointed with this top-rated product. Keep reading to learn more about our other top picks and find the perfect Single End Countersink for your needs.