DISSTON COMPANY 443713 MM #28 Wire GA Drill Bit Master Mechanic, #28, 2-7/8", BLACK oxide, wire gauge Number drill bit, jobber length, straight shank, 135 split point eliminates walking provides quick starting, surface treated with BLACK oxide finish for abrasion resistance improved chip flow, designed for precision hole sizing such as tapping threaded holes, wire gauge diameters fall between fractional sizes for most precise hole sizes, taps through sizes 1/4-28 require the use of wire gauge bits, Carded. Features Double reinforced with industrial grit glue for increased life durability Easy to use Manufactured in China USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.