The 3500 Series FD07 is a 7mm flexible steel shaft hose clamp nut driver — a workshop tool for tightening hose clamps in awkward locations where a rigid screwdriver can't reach or can't apply consistent pressure. The 7mm socket size suits European-style hose clamps, including our Kale W1, W3 and W4 clamp ranges and similar European brand hose clamps.

Compared to a standard flathead screwdriver, the socket driver applies even torque without the cam-out wear that destroys clamp screw heads over repeat tightening. The flexible shaft routes around obstructions in tight engine bays and tractor cab work — significantly safer than forcing a screwdriver into a bad angle and slipping onto knuckles.

Specifications

• FD07 — 7mm hex socket
• Flexible steel shaft for awkward access
• Suits Kale W1/W3/W4 hose clamps and similar European patterns

For 8mm clamps used on 5700, 6700 and 6800 Series clamps, see the SD08 rigid steel shaft driver. For multi-socket workshop kits, see the CND-1 multi-purpose hose clamp nut driver.