Description: Exquisite and professional workmanship makes it very wear-resistant and durable. The ergonomically designed handle makes it very comfortable to hold and non-slip. The smooth and burr-free characteristic makes it not hurt your hands. Simple and convenient operation will not waste your time and energy. Made of plastic and rubber material, it is very durable to use. There are two plastic handles and four rubber grinding heads in this set. It is suitable for grinding dust accumulation in engine cylinders. Item Name: Valve Lapping Stick Material: Plastic,Rubber Specification: 6Pcs Features: Wear-resistant, Effortless, Time-saving Size Details: Length: 22cm/8.66", 20cm/7.87" (Approx.) Grinding Head Size: 1.5cm/0.59", 2cm/0.79", 3cm/1.18", 3.5cm/1.38" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 2 x Plastic Handles 4 x Rubber Grinding Heads