Features: brand new and high quality Concave type strong suction cover: Concave type increases the suction power, and it is more effective to mute the sound if it is not easy to loosen for a long for time. Floor/Wall: Two installation methods are available, but wall-mounted can for play a buffering effect, and floor-mounted only has the effect of ordinary door suction. Mute buffer: secondary buffer door suction, for play a role of secondary silencing collision. Strong suction power: it is not easy to shake when the wind blows, which effectively avoids the collision of the door. Thickened tip: thickened spring inside, strong elasticity. Specifications: Material: Stainless Steel Type: A/B/C/304 A Size: Approx. 38x106mm/1.5x4.17inch B Size: Approx. 52x116mm/2.05x4.57inch C Size: Approx. 52x114mm/2.05x4.49inch 304 Size: Approx. 52x112mm/2.05x4.41inch Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Door Stopper