This none-slip noise insulation tool is a non-slip roller. Easy to carry. Increase friction and reduce slippage. The roller can effectively increase the adhesion of the sound insulation material. Made of reliable material, this installation noise roller can bring of convenience. Perfect for installing sound insulation. Features -Color:Black -Material:Wood, Plastic, Metal -Size(Bump type):18.00X4.00X3.00cm/7.07X1.57X1.18in -Size(Transparent):18.00X3.50X3.50cm/7.07X1.38X1.38in -Non-slip rollers for increased friction and reduced slippage. The roller can effectively increase the adhesion of the sound insulation material, our sound deadening roller for auto is a very practical product. -Light weight, small size, easy to move, easy to store and take out, this deadening tool will not take up too much space for you. -Our sound deadening roller has a durable structure and excellent workmanship, which is suitable for sound insulation of the whole car. Its reliable practicability ensures that it is deeply loved by customers. -The comfortable handle of this car noise insulation roller ensures perfect installation, higher efficiency and less effort. Let you have of pleasant and beautiful experience. -You can give this sound deadening roller for auto as a gift to your relatives and friends, bringing them a pleasant experience. Package list: 1 x Bump Roller 1 x Smooth Roller