Preston Original Slip Elastic. Slip Elastic was the first colour coded elastic available and is still incredibly popular. Pre-treated with Preston Slip lubricant to give outstanding abrasion resistance and reliability it is available in five metre lengths from ultra fine size 2 up to a powerful 16. EL02  -  Original Slip Elastic No2 (0.67mm) Red EL03  -  Original Slip Elastic No3 (0.75mm) Green EL04  -  Original Slip Elastic No4 (0.85mm) Orange EL05  -  Original Slip Elastic No5 (0.91mm) Blue EL06  -  Original Slip Elastic No6 (1.06mm) Yellow EL08  -  Original Slip Elastic No8 (1.25mm) Black EL10  -  Original Slip Elastic No10 (1.4mm) Extra Blue EL12  -  Original Slip Elastic No12 (1.6mm) Extra Green EL14  -  Original Slip Elastic No14 (1.8mm) Extra Purple EL16  -  Original Slip Elastic No16 (2.0mm) Extra Yellow