WH小徑球刀 刃徑 刃長(zhǎng) 總長(zhǎng) 柄徑 R0.10 0.4 50 4 R0.15 0.6 50 4 R0.20 0.8 50 4 R0.25 1.0 50 4 R0.30 1.2 50 4 R0.35 1.4 50 4 R0.40 1.6 50 4 R0.45 1.8 50 4