Prestacyce's Big Angle Mini Pro head features a larger diameter stepped Urethane insert for easy installation, gentle removal, and a secure, long-lasting seal. Designed for accurate pressure readings, it allows pressing the Presta pin internally. The Big Angle Presta Head fits more wheels and includes a durable Urethane Elastomer gasket for a better seal and flexibility, ideal for tubeless tires. Made from nickel-plated 6061-T6 alloy, it is strong yet lightweight and compatible with Silca pumps, adaptable to other brands with optional accessories.