Name:45mm width 3-fold ball bearing drawer slide,retractable drawer slide 1 material:cold-rooled,steel plate; 2 width:45mm; 3 thickness:1.2x 1.2 x1.5mm; 4 undraw time:30000 times; 5 loading capacity:30-50kgs; 6 buttom black plastic buttom; 7 plating color bluezine-plated,color zinc-plated; 8 length 12-20 inch.