This is a red Jumpmaster. It’s a 111mm liner locking Swiss Army Knife with 4 layers. It’s one of only a few liner lock knives available with red nylon scales. It’s also one of a few knives containing a serrated emergency blade or seat belt cutter.
The Victorinox OH Master is a new 111mm liner lock model. It has gray/black dual density scales, a serrated one handed blade with a Road Tour logo and a new, stainless steel metal saw and metal file.
The one handed Master RT was introduced in 2010 as part of the Victorinox Road Tour collection, just like the Climber RT.
This is a red Victorinox Trailmaster. It is the same model as the pretty common One handed Trekker, but the Trekker usually has black scales instead of red ones. It’s also the same as the German Army Knife, but the GAK has no tweezers/toothpick.
This is the 2010 model of the Dutch Army Knife (DAK).
It is closely related to the Victorinox DualPro knife, but has a Phillips screwdriver instead of a corkscrew. The DAK has olive green nylon scales with an embossed Dutch army emblem. There are no toothpick and tweezers.
Both large blades are one handed opening. The main blade is serrated, the other blade is an emergency blade or seat belt cutter. The DAK has 2 stainless steel locking liners: both blades and the flathead screwdriver/bottle opener are locking.
The one-handed German Army Knife (OH-GAK) replaced the 108mm GAK in 2003. This knife is almost identical as the one-handed Trekker, a 111mm liner locking knife with a one-handed, partially serrated main blade, a wood saw, a can opener and a locking can opener/screwdriver/pry bar. It also has a reamer/awl, Phillips screwdriver and a keyring.
The GAK has olive drab green scales with a German Army eagle molded in the front scale and lacks the toothpick and tweezers of the Trekker.