The Distel Thistle lower ratchet strap works on the principle of modern ski and snowboard bindings. The robust toothed belt with Swiss ratchet and weather-resistant Biothane® strap ensure a secure grip and easy and precise adjustment. It can be tightened with one hand and can be retrofitted to all Distel tree climbing steps equipped with a screw eye (available with leather strap, Velcro fasteners sold separately).