SDS-Plus Drill Bit Set 0.236/0.315/0.315/0.394/0.472/0.551/16 mm x 210 mm, 40CR Steel Drill Bits with Tungsten Carbide Tip, Impact Drill Bits for Concrete, Masonry, Stone - SDS-Plus Drill Compatible

SDS-Plus 7 Piece Drill Bit Set for Impact Drill: This set includes 7 standard sizes (0.236, 0.315, 0.315, 0.394, 0.472, 0.55, 16mm) with a working length of 210mm. Ideal for DIY, renovations or professional construction sites. Compatible with all SDS-Plus drills on the market 40CR HIGH TEMPERATURE TEMPERED STEEL BODY - Made of high quality 40CR alloy steel, providing exceptional strength and durability. Resistant to high impact and high temperatures, even in heavy construction site use Heat treatment in the network oven for maximum hardness: Each drill bit undergoes precise high-temperature quenching that improves hardness and toughness. Prevents deformation and breakage, greatly extending the service life Original 4 Faceted Tungsten Carbide Tip: Tungsten carbide cross tip ensures precise positioning, prevents slipping and easily pierces concrete, brick, natural stone and hard materials Optimized Double Spiral + SDS-Plus Shank: Double spiral grooves quickly drain dust, keep drill bit cool and ensure clean holes. Standard SDS-Plus shank ensures unscrewing support and maximum power transmission