Drill bit Proline 91621, metal drill bit Ø16 mm, length 210 mm, 1 pc

Single Proline 91621 metal drill bit with a diameter of 16 mm and an overall length of 210 mm. Designed for drilling metal, this solid drill bit is suitable for workshop and construction tasks that require medium-diameter holes. It fits standard drill chucks and is intended for use in steel, iron and similar ferrous materials during repair, fabrication and installation work.

Advantages

The Proline 91621 drill bit is a single-piece tool that offers focused performance for metalworking. Its construction provides accurate centered drilling and reduced load on the drill, helping maintain consistent hole size. The design supports reliable insertion into standard chucks and stable operation during medium-duty drilling tasks.

Suitable for

• Drilling medium-diameter holes in steel and iron
• Workshop repairs and metal fabrication
• Installation work requiring precise through-holes
• Use with handheld and bench drills equipped with standard chucks

Key specifications

• Diameter: 16 mm
• Overall length: 210 mm
• Quantity: 1 piece
• Material application: metal / ferrous materials (steel, iron)
• Compatibility: standard drill chucks

How to use

Secure the drill bit in a properly rated chuck and ensure the drill is suitable for metalworking. Mark the drilling point and, if necessary, use a centre punch to prevent walking. Start drilling at a low speed to create a guide, then increase speed as appropriate for the material and the drill’s specifications. Apply steady pressure without forcing the bit; allow the bit to remove chips and cool. For harder steels or prolonged drilling, use cutting fluid or intermittent drilling to reduce heat buildup.

Usage recommendations

Use appropriate personal protective equipment, including safety glasses and gloves. Match drill speed and feed to the metal type and thickness; use cutting fluid when drilling harder ferrous materials to extend bit life and improve hole quality.