The two best-selling Multi-Tools currently are the 304 Stainless Steel Multifunctional M3.5 Link Chain Carabiner Set of 100 Silver intl, Aluminum Spring Snap Carabiner Set of 20 and 304 Stainless Steel Multifunctional M3.5 Link Chain Carabiner Set of 50 Silver intl. The most popular Multi-Tools are from Blue lans, DHS and HKS. Multi-Tools from these brands usually cost about S$ 4.00 to S$ 66.00. Depending on your needs, you can get Binoculars, Trekking Poles and Fire Starters. Most Multi-Tools used today are in Silver, Green and Blue. Up to 71% discounts on Multi-Tools can be found only on iprice.