HSS Twist Drill Bit12.5mm x 155mmHigh Speed SteelMetal Drilling Bits Features: SIZE: dia 12.5 x 155mm. Specification: Size -dia 12.5 x 155mmFurther Information We sell a wide variety of tools and workshop equipment for both the DIY and Professional markets. Alias: ys04701 Loops HSS Twist Drill Bit - 12.5mm x 155mm - High Speed Steel - Metal Drilling Bits in Metallics