Drill bit AWTools AW43555 — AWTools AW43555, general-purpose twist drill bit

AWTools AW43555 is a general-purpose twist drill bit designed for standard drilling tasks in hard materials. Constructed from 40CR alloy steel with a YG8C carbide-tipped blade and a centering point with a 130° point angle, this drill bit is intended for handheld and bench hammer drills and rotary hammers. The double spiral flute and four cutting edges support efficient material removal, stable drilling and reduced risk of jamming when encountering reinforcement, making it suitable for construction, maintenance and DIY applications.

Advantages

The combination of a 40CR alloy steel body and a YG8C carbide tip provides a balance of toughness and cutting durability for repeated use in concrete and masonry. A double spiral design promotes reliable dust and debris evacuation to limit overheating and lower vibration during operation. The four cutting edges produce smoother holes and improve stability when drilling through reinforced concrete and brick. The grooved SDS+ style shank secures the bit in compatible chucks to prevent accidental disengagement during hammering or rotary drilling.

Suitable for

• Drilling holes in concrete and reinforced concrete
• Punching through rebar and other embedded reinforcement
• Work in brick, block and masonry
• General construction, maintenance and home DIY tasks requiring hammer-drill use

Key specifications

• Material: 40CR alloy steel body with YG8C carbide-tipped cutting head
• Point geometry: Centering point with 130° point angle
• Flute design: Double spiral for efficient dust removal
• Cutting edges: Four cutting edges for smoother holes and reduced jamming
• Shank type: Grooved SDS+ style shank for secure retention in compatible chucks
• Application: Designed for use in concrete, reinforced concrete, rebar, brick and other hard materials
• Compatible tools: Hammer drills and rotary hammers

How to use

Fit the drill bit into an SDS+ compatible chuck or holder and ensure it is securely engaged before operation. Select the hammer function on the drill when working in concrete, reinforced concrete or masonry; for lighter materials, use rotary mode if available. Begin drilling at low speed to establish the centering point, then apply steady pressure and increase speed as needed while maintaining a perpendicular angle to the surface. Withdraw periodically to clear debris from the flutes and avoid prolonged continuous drilling to reduce heat buildup. Use appropriate personal protective equipment such as eye protection, gloves and dust mask.

Usage recommendations

For longer bit life and consistent performance, avoid excessive lateral pressure and allow the carbide tip to do the cutting. When encountering thick reinforcement, back the bit out slightly and clear debris before continuing. Match drill speed and hammer action to the material: higher hammer frequency for dense concrete, reduced impact for brittle masonry.