SST High performance power taps Specially designed for use on reversible portable drills, SST power taps are guaranteed to tap faster and last longer than standard taps in steel, stainless steel and other ferrous or non-ferrous metalsSST power taps eliminate slow hand tapping to increase productivity and reduce overall tapping costs. Product Information Brand WALTER Part # 03B541 Drill Size #7 Length 3.29 Inch Origin Country CN Product Type Taps Size 1/4" - 20 Thread NC Product InformationMade from premium grade HSS for extended life Available in plug geometry Spiral point is designed to eject chips through the bottom of the hole Special bronze SST surface treatment for extreme lubricity and life Long & resistant shank for tapping deepSuggested ApplicationCutting new threads in a variety of materials Cutting threads with reversible portable drill Tapping trough holes