Ice Rescue Systems uses only the finest ice screws made by Black Diamond. The Rapid Transport Sled accommodates Black Diamonds Screws with use of the Ice Screw holder. These screws help anchor or set a change of directions while on the ice. With Black Diamonds Express Screws you will experience the fastest placement of your screws with advanced tooth geometry and complete stainless steel construction, Express Ice Screws feature large, color-coded crank knobs for incredibly fast placements. Available in 2 lengths:U.S.A. Made 16 cm 145 g (5.1 oz) 19 cm 159 g (5.6 oz)