RUKO STS Set 5-Piece 75mm 2.5mm Square Drive Bits

Professional tradespeople and serious DIYers working with square drive screws will appreciate this 5-piece bit set from RUKO. Each bit features a 2.5 mm square tip and a 75 mm overall length, ideal for reaching recessed fasteners in construction, cabinetry, and metalworking applications. The 1/4-inch hex shank ensures secure chucking in impact drivers, drill drivers, and bit holders.

Key specifications

• Set includes 5 identical bits
• Tip type: Square (Robertson)
• Tip size: 2.5 mm
• Bit length: 75 mm
• Shank: 1/4 inch hex
• Material: High-alloy steel
• Corrosion protection: Yes

Why choose it

These bits are engineered for durability in demanding tasks. The high-alloy steel construction resists wear and breakage, while the corrosion-resistant finish extends service life. Their consistent sizing ensures a precise fit in square drive screws, reducing cam-out and improving torque transfer.

Ideal use cases

• Driving square drive screws in wood and metal
• Use with impact drivers for high-torque applications
• Professional construction and assembly work
• Maintenance and repair tasks requiring Robertson screws

Good to know

The bits come in a blister pack and are compatible with any standard 1/4-inch hex bit holder or direct-insertion power tool. For best results, match the bit size to the screw head to avoid stripping.