The SILCA Impero Ultimate II Frame Pump is an ergonomic improvement upon the original and is designed with various features that made us get one of these pumps for our bikes. An almost completely aluminum construction ensures this pump is durable, lightweight, and reliable. Convenient silicone bumpers on the head and handle tip help to keep the pump from moving around when we are riding and also keep our bike's finish from being scratched. The two-stage gasket head prevents any air from being lost when disconnecting, and a sizing system ensures our pump will fit perfectly on our bike's frame.