Material: Carbon Steel, Stainless Steel

Surface: Blue/White/Clear zinc plated Cr3+, Ruspert 1000hrs/1500hrs/2000hrs or more, C4 / High SST & Kesternich Test requirements

Head type: Countersunk head, Pan head, Wafer head, Oval head, Index washer/flange head, Bugle head, etc.

Drive Type: Phillips, POZI, Square, Torx, Hex washer, Hex, Slot+Hex washer

Thread Type: Coarse, thread, Fine thread, General thread, Lightining thread

Standard: DIN7504, ISO14580~3, Customized type

Others: 

- Precise point to drill, tap and fasten in one motion

- Easily drilling it's own gap and shapping it's own thrading

- Excellent and strong drilliing point

- Excellent quality

- Excellent water resistance