full extention ball bearing drawer slides: 1,Cycling test:7,000times 2,Smooth and ... 3,Reasonable in price. full extention ball bearing drawer slides 1,more than 30 years experience for manufacturing lid ... 2,it can be used in types of drawers.3,color: zinc white ,black are available, which are under ... 4,good quality with reasonable price,timely deliver.5,slides have past 7,000 cycles test.surface have past ...