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Stripboard Track Cutter Handle For 4 mm Bit
A palm-twist handle that turns a plain 4 mm twist drill into a stripboard (Veroboard) spot-face track cutter. The 4.3 mm socket is 30 mm deep, and a radial M3 heat-set insert (4.0 mm bore) takes a set screw that locks the bit. The handle is 32 mm across at the fluted grip and 94 mm long. You get clean track breaks without chasing a loose bit around the bench with your fingers.
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