THUNDERBOLT(R) TITANIUM COATED BIT SET
14-pc bit set has titanium coating to reduce -heat build up to offer 3 times longer bit lifeThicker core for ultimate strength135 deg. split point tip starts on contactParabolic flute clears chips fastFor use in wood, metal and PVCPlastic case includes 1 of sizes 1/16" to -1/2" with 2 each of 1/8" bit