Flute geometry removes dust from the hole quickly, double tempered, shot peened, finish with copper braze material for heat resistance and reduced tip loss. The chrome vanadium shaft is through hardened to 50-53HrC. Fits all SDS-Max, Hilti TE F, G and Y rotary hammers.

플루트 기하학은 구멍에서 먼지를 신속하게 제거하고, 이중 강화, 샷 피닝, 구리 브레이즈 소재로 마감하여 내열성과 팁 손실을 줄입니다. 크롬 바나듐 샤프트는 50-53HRC로 경화됩니다. 모든 SDS-Max, Hilti TE F, G 및 Y 로터리 해머에 맞습니다. The IRWIN 323010- Drill Bit, 3/4 x 17 x 21 SDS-max 4 Cutter Masonry Drill Bit is a fast and durable bit for the professional user. The bit features a Chrome Vanadium Spring Steel shaft that is through-hardened for Superior Durability. The Shot-peened, double tempered finish reduces breakage. The Bit also features a tip with a Copper brazed material that gives high heat resistance and reduced tip loss. The SDS-max® shank fits all SDS-max® rotary hammers. The four cutter Tip privides moredurability and rounder holes
The Irwin Tools 323010- Drill Bit, 3/4 x 17 x 21 SDS-max 4 Cutter Masonry Drill Bit is a fast and durable bit for the professional user. The bit features a Chrome Vanadium Spring Steel shaft that is through-hardened for Superior Durability. The Shot-peened, double tempered finish reduces breakage. The Bit also features a tip with a Copper brazed material that gives high heat resistance and reduced tip loss. The SDS-max® shank fits all SDS-max® rotary hammers. The four cutter Tip privides moredurability and rounder holes.