KS TOOLS 1/2 inch universele trappensleutel, 4-traps, 3/8 inch-1 inch (130.2000)

This universal step wrench from KS TOOLS is a specialized tool for radiator valves, heating installations, fittings, and tank connections. Its 4-step conical head securely grips square and hexagonal fasteners from 3/8" to 1" (10 mm to 21 mm), driven by a standard 1/2" square drive. The chrome vanadium steel construction with a polished chrome finish ensures durability and corrosion resistance, making it a reliable addition to any professional toolkit.

Advantages

The step wrench offers a compact 97 mm length for easy access in tight spaces. Its multi-step design eliminates the need for multiple individual keys, saving time and reducing tool clutter. The chrome plating provides a smooth, easy-to-clean surface that resists rust and wear, extending the tool's service life even in demanding environments.

Suitable for

• Radiator valve maintenance and replacement
• Heating system installations and repairs
• Plumbing fittings and tank connections
• Automotive and industrial applications requiring multi-size square/hex drive

Key specifications

• Drive size: 1/2" (12.5 mm) internal square
• Number of steps: 4
• Step sizes: 3/8", 1/2", 3/4", 1" (10 mm, 12.5 mm, 16 mm, 21 mm)
• Material: Chrome vanadium steel
• Finish: Chrome plated, polished
• Total length: 97 mm
• Standard compliance: DIN 3120 / ISO 1174

Recommendations

For best results, use this step wrench with a quality 1/2" ratchet or extension bar. Always ensure the step fully engages the fastener before applying torque. Clean and dry the tool after use to maintain its corrosion resistance.