A.套筒 B.柱塞 C.出油閥 D.滾輪體
A.0.2-0.7mm B.0.3-0.8mm C.0.4-0.9mm D.0.5~1mm
A.0.2~0.4mm B.0.1~0.3mm C.0.3-0.5mm D.0.1-0.6mm