Mares Force Plus Knife Mares Sale! from $ 127.95 USD /per Produc variants Default Title Qty. Add to Cart Couldn't load pickup availability Refresh Force Plus Knife The Force Plus diving knife has a soft ergonomic over-molded handle. Blade length of 10cm. Adaptable to Mares buoys, bags and hoses. Equipped with an easy release system as well as thick gloves.