Premium Material: 40Cr Alloy Steel + YG8 Carbide Tip：High‑strength steel body with hard carbide cutter head, delivers stable hollow‑drilling performance on concrete, brick wall and masonry.
Dual‑Hardness Design：Shank hardness: 47‑53HRC; Carbide tip hardness: 89‑92HRA, impact‑resistant and hard‑wearing.
SDS‑Plus Shank：Fits standard SDS‑Plus rotary hammers firmly, suitable for common household & engineering electric hammers.
Multiple‑Diameter Hollow‑Cutting Heads：Available in 65‑80mm, fast hole‑opening for air‑conditioning, pipeline installation and wall renovation.
Optional Extension Adapter 300mm：2‑type adapters (SDS‑Plus / SDS‑Max) for deep‑drilling, extend working depth flexibly.
Sand‑blasted Anti‑Rust Surface：Good corrosion resistance, long‑term service‑life under construction‑site environment.
| Product Name | Model | Item No. | Star Rating | Specification | Shank Type | Material | Hardness | Surface Treatment |
| Hole Core Drill Bit | AMAS03-0065 | 201000101000 | Four Stars | 65mm | SDS-PLUS | 40Cr+YG8 | Base Body：47-53HRC Cutting Tip：89-92HRA | Sandblasted |
| Hole Core Drill Bit | AMAS03-0068 | 201000201000 | Four Stars | 68mm | SDS-PLUS | 40Cr+YG8 | Base Body：47-53HRC Cutting Tip：89-92HRA | Sandblasted |
| Hole Core Drill Bit | AMAS03-0072 | 201000301000 | Four Stars | 72mm | SDS-PLUS | 40Cr+YG8 | Base Body：47-53HRC Cutting Tip：89-92HRA | Sandblasted |
| Hole Core Drill Bit | AMAS03-0080 | 201000401000 | Four Stars | 80mm | SDS-PLUS | 40Cr+YG8 | Base Body：47-53HRC Cutting Tip：89-92HRA | Sandblasted |
| Sds Plus Adapter | AMAS03-0300P | 201000601000 | Four Stars | 300mm | SDS-PLUS | 40Cr | Base Body：47-53HRC Cutting Tip：89-92HRA | Sandblasted |
| Sds Plus Adapter | AMAS03-0300M | 201000501000 | Four Stars | 300mm | SDS-MAX | 40Cr | Base Body：47-53HRC Cutting Tip：89-92HRA | Sandblasted |
