Hign-concerned Chemical:NoneOrigin:Mainland ChinaValve Lapping Stick Material: Plastic,Rubber Total Length: 22.5cm/9", 21cm/8" Handle Dia: 17mm/0.7", 23mm/0.9" Suction Cup Dia: 2cm, 1.5cm; 2.8cm,3.5cm Valve lapper set for hand lapping valves. Suitable for small and large vehicles. Hardwood handles for easy hand lapping of engine valves. Resistant to grease / petrol and oil. Thick handles for easy lapping Valve Grinding Paste ----- One side Coarse pre-grinding paste for effortless grinding ---- One side Fine regrinding paste for fast and effective Package Content: based on your choice Note: 1. Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.