Features STEPLESS VIBRATION DESIGN: The more vibration switches are pressed, the higher the vibration frequency of the cement trowel. The maximum vibration speed is 12000 r/min. BATTERY PARAMETERS: 2 rechargeable lithium batteries 3.7VV 2000mAh(with). A fully charged battery can run for approximately 1.5 hours. Only takes about 1 hour to fully charge. MANGANESE STEEL BLADE: The scraper is made of premium manganese steel material, corrosion resistant and rust proof, ensuring a long service life. MAIN USE: The trowel is suitable for strengthening cement, removing bubbles in concrete, and providing you with the toughest cement. EASY TO USE: The compact design of the vibrating trowel is an ideal choice for continuous use. Specification: Item Type: Concrete Flat Plate Trowel Material: ABS, Manganese Steel Battery: 3.7V polymer battery x 2 Battery Capacity: 2000mAh x 2 (shipped with built in battery) Speed: 12000 r/min Package List: 1 x Vibration Machine   1 x Cement Scraper   4 x Screw   4 x Nut   1 x Manual   Package List 1 x Vibration Machine 1 x Cement Scraper 4 x Screw 4 x Nut 1 x Manual