1.tube diameter: 14x28x1mm 14x28x1.2mm 2.material of blade saw: 65Mn/ 50Mn 3.Double-side grinding teeth hardened by high frequency current 4.ABS/ PP plastic protective gloves 5.plastic-immersed chromeplated handle 6.size: 18" / 21" / 24" / 30" / 32" / 36"