BENRO TRA169 Travel Angel TRA Removable rubber and stainless steel spike feet provide a secure grip both indoors and outdoors Anti-twist leg sections and a grooved center column make setup and breakdown quick and easy Dust and water-resistant leg lock design prevents dust or moisture from entering the interior of the leg twist-locks. The matching ballhead has three independent locking knobs to separately control general positioning, panning, and friction control Offers two leg-angle settings to accommodate uneven terrain or awkward shooting situations