Gammarus is an amphipod crustacean genus in the family Gammaridae and often referred to as Scuds. The Gammarus is a bug small in size but big in importance and found in both fresh and saltwater. This fact makes Gammarus flies a permanent part of any serious fly box and the Pro Gammarus shell assists in making lifelike imitations with ease. 

Gammarus is an amphipod crustacean genus in the family. Gammaridae and often referred to as Scuds. The Gammarus is a bug small in size but big in importance and found in both fresh and saltwater. This fact makes Gammarus flies a 

permanent part of any serious fly box and the Pro Gammarus shell assists in making lifelike imitations with ease. 

Specs & features: 

• Available in five sizes XXS-XS-SM-ME-LG. The below hooks sizes are approximate and may deviate due to hook design 
  • XXS 21 pcs / pack #14-16 hooks
  • XS   18 pcs / pack #10-14 hooks
  • SM   18 pcs / pack #6-10 hooks
  • ME   15 pcs / pack #4-6 hooks
  • LG   15 pcs / pack #1-2  hooks 
• Stretchable and strong
• Highly detailed graphics
• Easy to use
• Generous numbers per pack