Material: M35 cobalt steel (5% of Cobalt)
The addition of cobalt increases heat and wear resistance, it also makes the drill cut faster. The cobalt drill bits are made to work on tough metals, such as 5mm thick 304 stainless steel and cast irons. We do not recommend using our products on glass or ceramic materials, which require their own specified drill bits.

Angle Point: 135 degree split point
135 degree provides a faster cutting speed with less force applied. The straight shank guarantees a firm holding for the power equipment, and reduces walking effectively.

Packaging: Plastic bag
The 13 pieces set are packed in an economical plastic bag with pockets for different sizes, we provided 13 sizes1/16(1.59mm); 5/64(1.98mm); 3/32(2.38mm); 7/64( 2.78mm); 1/8(3.18mm); 9/64(3.57mm); 5/32(3.97mm); 11/64(4.37mm); 3/16(4.76mm); 13/64(5.16mm); 7/32(5.56mm); 15/64(5.95mm); 1/4(6.35mm).

Warranty: 90 days
Customer satisfaction is our ultimate goal, if you have any questions or not satisfied with our products, please write to our customer service team support@amoolo, we will respond within 12 hours.