A universal design with adjustable mounting width and anti-theft security locking system is ideal for long road trips and off road adventure! T-slot channel provides easy installation with enhanced strength and low air resistance. Universal roof rack crossbar system with anti-theft lock. Perfect for roof rack, snow board/ski attachment, bike rack, cargo basket, etc. It can work with ceiling accessories. Thanks to its aerodynamic design, it efficiently reduces wind noise and resistance by 40%-70%. The base foot angle can be adjusted freely to fit the car roof perfectly. Feet with rubber pads/seals do not damage the ceiling and paint. Easy to assemble and disassemble in minutes, no screwing required. Compatible Vehicles: Compatible for vehicles without grooves. The roof bar should measure 100cm from outside to outside. When measuring, do not take into account the door-to-door length. Be careful to measure from roof bar to bar. Only suitable for 4 or 5-door cars (not suitable for 3-door cars, minibuses or large 4x4s). (Please make sure it fits your vehicle before purchasing.) Technical Specifications: Material: aluminum crossbar, plastic base legs, stainless steel Colour: Black Bar length: 100cm Total Length: 115cm Ceiling Measurement Compatibility: 100-104cm BetweenMaximum Weight: 75kgQuantity: 1 setPackage included:2 x aluminum cross bars4 x base legs4 x rubber pad2x wrench4 x stainless steel brackets4 x rubber protective caps8 x hook8 x rubber gasket