Size casing ?

[smokingrobert]

Getting everything ready to do my first ever snack sticks . I picked up some 21mm clear collagen casings , they seem a little small in diameter to me .  It the 21mm about the size everyone uses for snack sticks ?? 

 

[BGKYSmoker]

 
Getting everything ready to do my first ever snack sticks . I picked up some 21mm clear collagen casings , they seem a little small in diameter to me .  It the 21mm about the size everyone uses for snack sticks ?? 

A 7/16 OD tube will stuff casing sizes from 16-21mm

3/8" OD tube works well with casings from 13-16mm, if you use this small tube on larger casings you may get air pockets.