60° Center Drill Set, 5 pcs Combined drills and countersinks are designed with spiral flutes to give long tool life and high quality center holes where accurate centering is essential to good quality for subsequent operations. Features include... Size # 1 60° Combined Drill & Countersink 5 pc package 1.25" Overall Length HSS Right Hand Body Dia: 1/8" Drill Dia: 3/64" Drill Length: 3/64"