The Venezia 4 bike carrier is constructed from lightweight aluminium & fully assembled. 4 Bike Rear Carrier (Maximum weight 45kg) Double upper straps, the most stressful point Lower straps anti-bounce system All straps tested at 250 kilos each All 6 tempered hooks tested at 350 kilos each Steel buckles Patented shock absorbing frame support 30 x 2,8 mm diameter aluminium tube Doubly safe with extra safety strap fixed to frame Fully assembled, no tools required Quick and easy to fit and remove Folds flat for storage Tested and approved to XP R18-904-4:2008 We recommend that if you've covered up your vehicle number plate & lights then you fit an additional light board to comply with road vehicle lighting laws