Concrete pilot drill bit Dedra 100 mm TCT, model 08X005

Dedra Concrete pilot drill bit 100 mm TCT is a tungsten-carbide-tipped guide bit designed for accurate pilot holes in masonry and concrete. With a 100 mm working length and a TCT cutting head, this pilot drill is intended to create clean, precise guide bores for anchors, larger core drills or subsequent drilling operations. The bit is compatible with rotary and hammer drills that accept standard drill shanks and is suited for site work, installations and repair tasks where reliable hole positioning is required.

Advantages

The TCT (tungsten carbide tipped) cutting head provides high wear resistance and maintains cutting performance when penetrating concrete and masonry. Its 100 mm length gives sufficient depth for typical pilot bores while keeping the bit rigid for accurate guidance. The design reduces walking on the surface and helps establish a centered starting hole, improving the precision of subsequent drilling stages. The bit is engineered for repetitive use in construction and installation environments.

Suitable for

• Drilling pilot holes for anchor bolts and fixings in concrete and masonry
• Creating guide holes before core drilling
• Installing electrical boxes and conduits in walls
• Repair and renovation tasks requiring precise hole positioning

Key specifications

• Tip material: tungsten carbide (TCT)
• Length: 100 mm working length
• Intended material: concrete and masonry
• Compatibility: rotary and hammer drills with matching shank type
• Primary application: pilot/guide hole drilling

How to use

Secure the pilot drill bit in the drill's chuck following the drill manufacturer’s instructions. Mark the drilling point and start at low speed to establish the hole without wandering. Increase speed and apply steady, moderate pressure suitable for concrete or masonry; if using a hammer drill, select the appropriate mode recommended for pilot drilling. Withdraw the bit periodically to remove dust and debris and allow cooling if performing extended or repetitive drilling.

Usage recommendations

Use appropriate personal protective equipment such as safety glasses, hearing protection and a dust mask when drilling concrete. For best results, pre-mark and center-punch when possible, and choose a drill with compatible torque and speed settings to maintain bit life and hole accuracy.