Hosco Japan Groobar

Filing the nut slots down can be tricky. These Groobars are the perfect help to prevent filing the nut slot too deep. Four non-hardened steel bars in different thicknesses.

L 1,07mm / 0.042"

L 1,27mm / 0.050"

M 1,42mm / 0.056"

H 1,65 mm / 0.065"