Bondline single adjustable rubber heel grounding strap bondline hs5 a heel strap used for earthing personnel where extra mobility is required such as in production or stores environments where static protective flooring or mats have been fitted the hs5 antistatic heel grounder from bondline is constructed using a strip of two layered rubber sheet insulative white and conductive black attached to a 25mm elastic garter forming a heel cup a 1m metal film resistor joined in series with the