TARION TR-SD80 80cm 31" Track Slider Stabilizer Stabilization System with Portable Case for DSLR Video Camera Camcorder Canon Nikon Adopts 4 adjustable low-resistance roller bearings, higher load-bearing, more smooth and stable. Equipped with standard ARCA SWISS groove, perfect for being directly installed on ball head, no quick-release plate needed. Scientific and unique design on both ends, block the slide plate and prevent it from impact and scratch. Upgraded ends design bring a maximum use of the track length. Integrated brake screw design, more efficient and can decrease friction. A rubber pad part on slide plate, anti-slip and shock resistant. Slide plate support both 1/4" and 3/8" interface for versatile usage. Extra 1/4" and 3/8" interface on both ends, easily fixed on tripods. Adjustable feet for ideal shooting height. Equipped with standard ARCA SWISS groove, perfect for being directly installed on ball head, no quick-release plate needed. Adopts 4 adjustable low-resistance roller bearings, higher load-bearing, more smooth and stable. Scientific and unique design on both ends, block the slide plate and prevent it from impact and scratch. Upgraded ends design bring a maximum use of the track length. Integrated brake screw design, more efficient and can decrease friction. A rubber pad part on slide plate, anti-slip and shock resistant. Slide plate support both 1/4&#034; and 3/8&#034; interface for versatile usage. Extra 1/4&#034; and 3/8&#034; interface on both ends, easily fixed on tripods. Adjustable feet for ideal shooting height.