For 3D Printer Hot Bed/Platform High quality Color:silver + gold Material:Stainless steel Size approx.:1.2 * 7.5 * 21.5 * 8mm Package Contents: 4 x 304 Stainless Steel M3*40mm Screw 4 x 304 Stainless Steel 1.2*7.5*21.5*8mm Spring 4 x High quality Coppor Knob Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.