Ezyoutdoor 5 pcs Buckle Climbing Deduction Pocket Gadgets Screwballs Inner Hexagonal Wrench tools for Survival Training Hiking Hunting Main function; in addition to the use of high bearing mount and pulley system bring you different practical function [Engineering / lifting / rescue and disaster relief / swimming across the river and so on, body accompanied by interior angle of a variety of specifications of the open function, 1 / 4 adapter / word screwdriver / bottle opener and so on Material: High Tensile Stainless Steel;Size: 9x3.8x0.7 cm/3.54"x1.5"x0.28";Single pulley allows for lines up to 1/2" diameter Surface polishing thickening bearing resistance purposes;Can be used in engineering / handling / emergency / disaster relief heavy river swimming etc. Outdoor portable tool, mini shape, big effect;Strong and durable with stainless steel material;Suitable for using with key ring, parachute cord or other items. Tip:because the surface is a rolling light treatment, there will be some of the rolling light does not produce the same product, do not mind is a normal phenomenon.