... . 3.Spring for mattres,shock absorbers 4.Best price 1. Product Name: 2.6mm Spring Of Grade 452. Material: Steel GradeGB StandardCarbon%Silicon ... .6mm,0.7mm,0.88mm,0.9mm,1mm,1.2mm,1.3mm,1.4mm,1.5mm,1.6mm,1.7mm,1.8mm,1.85mm,1.9mm,2mm,2.05mm,2.1mm,2.15mm,2.2mm,2 ... .25mm,2.3mm,2.4mm,2.5mm,2.6mm,2.75mm,2.8mm,2.85mm,2 ...