Triangle head sizes: 1.8, 2.0, 2.3, 2.7, 3.0; shaft 6.35 mm / 1/4 in; total length 50 mm Triangle screwdriver bit set made of alloy S2 steel, durable and very wear-resistant Magnetic screwdriver bits for easy screw retention during use, reduce cam-out, and help avoid damage to the screw head and the bit Suitable for installation in pneumatic screwdriver, electric screwdriver, cordless drill, using the wind charge Key benefits and performance - Durable and wear-resistant: all bits are made from alloy S2 steel to withstand frequent use in demanding fastening tasks - Magnetic tips: hold screws securely, enabling smoother operation and reducing the risk of dropping or cross-threading - Precise triangle head compatibility: designed for triangle head fasteners across multiple sizes - Consistent 6.35 mm / 1/4 inch shaft and 50 mm length: standard dimensions that fit common bit holders and ensure steady access in tight spaces 2-3 practical use scenarios - Electronics repair and precision assemblies: use the small triangle head sizes (1.8 to 3.0) for secure fastening on devices and small enclosures - Home and DIY projects requiring triangle head screws: install or service fixtures, panels, and hardware with improved control and reduced screw damage - General maintenance with power tools: compatible with pneumatic, electric, and cordless drills for efficient and reliable screw driving in workshops or on-site tasks