Stepped metal spiral drill bits 3pcs 4-12, 4-20, 6-30mm 14248

Stepped spiral drill bits for metal 3pcs 4-12, 4-20, 6-30mm

Stepped spiral drill bits for metal 3pcs in sizes 4-12, 4-20, 6-30 mm made from HSS high-speed steel for drilling into sheet metal, plastic, or metal. The stepped drill bits are stored in a metal box.

Technical data:
Material: HSS high-speed steel 4241
Drill bit 4-12 mm: shank 6 mm, stepping by 1 mm
Drill bit 4-20 mm: shank 8 mm, stepping by 2 mm
Drill bit 6-30 mm: shank 10 mm, stepping by 2 mm