Faithfull extensive range of metric sizes for home user and diy enthusiasts these high speed steel hss straight shank drills are suitable for use on both wood and metal and may be used in hand or power drills a cutting lubricant is recommended when using these drills in metal please note these drill bits are priced individually but supplied only in bulk packs sizes up to and including 9mm are supplied in 10s larger sizes are supplied in 5s