More informationReleases CO2 with a simple pressure on the head, allowing controlled and precise inflation.Features:Compatible with Presta and Schrader valves.Material: CNC machined aluminum (valve adapter), silicone (grip).Measurements: 4.2 x 2.3 x 1.4 cm (the valve adapter). Weight: 15 g (the valve adapter). Includes: One E-grip valve adapter, one cylinder 16 g. and a silicone grip.